Area - Revision history

NRJC at 17:23, 8 April 2019

2019-04-08T17:23:36Z

2019-04-06T21:41:55Z

2019-04-06T20:35:29Z

2019-04-06T09:22:29Z

2019-03-26T11:19:51Z

‎Surface Area of a Cylinder

2019-03-26T11:19:34Z

‎Key Stage 3

2019-03-26T11:16:21Z

‎Area of a Rectangle

2019-03-26T11:16:05Z

2019-03-26T11:08:30Z

‎Upper Key Stage 2

2019-03-26T10:54:04Z

‎About Area

@@ Line 76: / Line 76: @@
 |}
-: The [[area]] of [[parallelogram]]s can be found by multiplying the [[base]] by the [[height]].
+: The [[area]] of parallelograms can be found by multiplying the [[base]] by the [[height]].
 : The [[area]] of a triangle can be found by multiplying half the [[base]] by the [[height]].

@@ Line 45: / Line 45: @@
 : The [[unit]]s of [[area]] are not usually '[[square]]s', they are either [[Metres Squared|metres squared]] (m<sup>2</sup>) or [[Centimetres Squared|centimetres squared]] (cm<sup>2</sup>).
 : The [[area]] of a [[rectangle]] or a [[square]] can also be found if the length of the sides is known.
-: To find the [[area]] of a [[rectangle]] or [[square]]; [[multiply]] the [[base]] by the [[height]].
+: To find the [[area]] of a [[rectangle]] or [[square]]; multiply the [[base]] by the [[height]].
 {| class="wikitable"
@@ Line 76: / Line 76: @@
 |}
-: The [[area]] of [[parallelogram]]s can be found by [[multiplying]] the [[base]] by the [[height]].
+: The [[area]] of [[parallelogram]]s can be found by multiplying the [[base]] by the [[height]].
-: The [[area]] of a triangle can be found by [[multiplying]] half the [[base]] by the [[height]].
+: The [[area]] of a triangle can be found by multiplying half the [[base]] by the [[height]].
 {| class="wikitable"

@@ Line 77: / Line 77: @@
 : The [[area]] of [[parallelogram]]s can be found by [[multiplying]] the [[base]] by the [[height]].
-: The [[area]] of a [[triangle]] can be found by [[multiplying]] half the [[base]] by the [[height]].
+: The [[area]] of a triangle can be found by [[multiplying]] half the [[base]] by the [[height]].
 {| class="wikitable"

@@ Line 41: / Line 41: @@
 | style="height:20px; width:200px; text-align:center;" |This shape has 12 full [[square]]s and 3 half [[square]]s. So the [[area]] is 12 + 3.5 = 15.5 squares.
 | style="height:20px; width:200px; text-align:center;" |This shape has 10 full [[square]]s, 2/3 of a [[square]], 4 half [[square]]s and 1/3 of a [[square]]. So the [[area]] is 10 + 2/3 + 4 + 1/3 = 15 [[square]]s.
-| style="height:20px; width:200px; text-align:center;" |This [[circle]] has 12 full [[square]]s, 4 nearly full [[square]]s, 4 nearly empty [[square]]s, 6 half squares. The [[area]] is difficult to [[estimate]] but it is around 19 [[square]]s.
+| style="height:20px; width:200px; text-align:center;" |This circle has 12 full [[square]]s, 4 nearly full [[square]]s, 4 nearly empty [[square]]s, 6 half squares. The [[area]] is difficult to [[estimate]] but it is around 19 [[square]]s.
 |}
 : The [[unit]]s of [[area]] are not usually '[[square]]s', they are either [[Metres Squared|metres squared]] (m<sup>2</sup>) or [[Centimetres Squared|centimetres squared]] (cm<sup>2</sup>).

@@ Line 167: / Line 167: @@
 ====Surface Area of a Cylinder====
-<math>area = 2 \times \pi \times (radius)^2</math> + 2 \times \pi \times radius \times height
+<math>area = 2 \times \pi \times (radius)^2 + 2 \times \pi \times radius \times height</math>
 <math>a = 2 \pi r^2 + 2 \pi rh</math>

← Older revision		Revision as of 11:19, 26 March 2019
Line 132:		Line 132:

	<math>a = \pi r^2</math>		<math>a = \pi r^2</math>
		+
		+	==Key Stage 4==
		+	===Meaning===
		+	[[Area]] is the size of a surface.
		+
		+	===About Area===
		+	: The [[unit]]s of [[area]] are [[Metres Squared\|metres squared]] or [[Centimetres Squared\|centimetres squared]].
		+
		+	===Equations===
		+	====Area of a Rectangle====
		+	<math>area = base \times height</math>
		+
		+	<math>a = b\times h</math>
		+
		+	====Area of a Triangle====
		+	<math>area = \frac{1}{2} \times base \times height</math>
		+
		+	<math>a = \frac{b \times h}{2}</math>
		+
		+	====Area of a Trapezium====
		+	<math>area = \frac{1}{2} \times (shortside+longside) \times height</math>
		+
		+	<math>a = \frac{1}{2} \times (A+B) \times height</math>
		+
		+	====Area of a Circle====
		+	<math>area = \pi \times (radius)^2</math>
		+
		+	<math>a = \pi r^2</math>
		+
		+	====Surface Area of a Sphere====
		+	<math>area = 4 \times \pi \times (radius)^2</math>
		+
		+	<math>a = 4 \pi r^2</math>
		+
		+	====Surface Area of a Cylinder====
		+	<math>area = 2 \times \pi \times (radius)^2</math> + 2 \times \pi \times radius \times height
		+
		+	<math>a = 2 \pi r^2 + 2 \pi rh</math>

@@ Line 116: / Line 116: @@
 <math>area = base \times height</math>
-<math>a = b\timesh</math>
+<math>a = b\times h</math>
 ====Area of a Triangle====

← Older revision		Revision as of 11:16, 26 March 2019
Line 104:		Line 104:
	<math>area = 17.5cm^2</math>		<math>area = 17.5cm^2</math>
	\|}		\|}
		+
		+	==Key Stage 3==
		+	===Meaning===
		+	[[Area]] is the size of a surface.
		+
		+	===About Area===
		+	: The [[unit]]s of [[area]] are [[Metres Squared\|metres squared]] or [[Centimetres Squared\|centimetres squared]].
		+
		+	===Equations===
		+	====Area of a Rectangle====
		+	<math>area = base \times height</math>
		+
		+	<math>a = b\timesh</math>
		+
		+	====Area of a Triangle====
		+	<math>area = \frac{1}{2} \times base \times height</math>
		+
		+	<math>a = \frac{b \times h}{2}</math>
		+
		+	====Area of a Trapezium====
		+	<math>area = \frac{1}{2} \times (shortside+longside) \times height</math>
		+
		+	<math>a = \frac{1}{2} \times (A+B) \times height</math>
		+
		+	====Area of a Circle====
		+	<math>area = \pi \times (radius)^2</math>
		+
		+	<math>a = \pi r^2</math>

← Older revision		Revision as of 11:08, 26 March 2019
Line 74:		Line 74:
	<math>area = 27cm^2</math>		<math>area = 27cm^2</math>

		+	\|}
		+
		+	: The [[area]] of [[parallelogram]]s can be found by [[multiplying]] the [[base]] by the [[height]].
		+	: The [[area]] of a [[triangle]] can be found by [[multiplying]] half the [[base]] by the [[height]].
		+
		+	{\| class="wikitable"
		+	\|-
		+	\|[[File:ParallelogramArea1.png\|center\|200px]]
		+	\|[[File:ParallelogramArea2.png\|center\|200px]]
		+	\|[[File:TriangleArea1.png\|center\|200px]]
		+	\|-
		+	\| style="height:20px; width:200px; text-align:center;" \|
		+	<math>area = base \times height</math>
		+
		+	<math>area = 6 \times 3</math>
		+
		+	<math>area = 18cm^2</math>
		+	\| style="height:20px; width:200px; text-align:center;" \|
		+	<math>area = base \times height</math>
		+
		+	<math>area = 4 \times 6</math>
		+
		+	<math>area = 24cm^2</math>
		+	\| style="height:20px; width:200px; text-align:center;" \|
		+	<math>area = \frac{1}{2} \times base \times height</math>
		+
		+	<math>area = \frac{1}{2} \times 5 \times 7</math>
		+
		+	<math>area = 17.5cm^2</math>
	\|}		\|}