Area and Perimeter (foundation) Flashcards Preview

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Flashcards in Area and Perimeter (foundation) Deck (18):
1

What is the perimeter of the shape below?

4 + 3 + 4 + 3 = 14cm

2

What is the perimeter of the shape below?

12cm

3

What is the area of the shape below?

(Assume each square is 1cm2)

13cm2

4

What is the area of the shape below?

8 x 7 = 56cm2

5

What is the area of the shape below?

4 x 5 = 20cm2

6

What is the perimeter of the shape below?

10 + 24 + 26 = 60cm

7

What ist the area of the shape below?

5 x 12 ÷ 2 = 30cm2

8

What is the area and perimeter of the shape below?

Perimeter

12 + 6 + 7 + 8.4 = 33.4cm

Area

0.5(12 + 8.4) x 6 = 61.2cm2

9

What is the area of the shape below?

Split the shape into a rectangle (6 x 4) and a square (4 x 4)

(6 x 4) + (4 x 4) = 40cm2

10

What is the area of the shape below?

14 x 20 ÷ 2 = 140cm2

11

What is the area of the shape below?

Triangle: 10 x 20 ÷ 2 = 100cm2

Minus the square: 100 - 16 = 84cm2

So the area is 84cm2

12

What is the area of the shape below?

Area of the large triangle: 22 x 20 ÷ 2 = 220cm2

Area of the small triangle: 11 x 10 ÷ 2 = 55cm2

Total area: 220 – 55 = 165cm2

13

What is the area of the shape below?

Triangle on top: 2 x 13 ÷ 2 = 13cm2

Rectangle underneath: 4 x 13 = 52cm2

Total area: 13 + 52 = 65cm2

14

Which of the shapes below has the largest area?

Triangle area = 28cm2

Rectangle area = 28.75cm2

Trapezium Area = 28.5cm2

 

Rectangle has largest area.

15

Convert 15cm2 into mm2.

1 cm2 = 10mm x 10mm = 100mm2

15 x 100 = 1500mm2

16

Convert 1.3m2 into cm2

1m2 = 100cm x 100cm = 10000cm2

1.3 x 10000 = 13000cm2

17

How much will it cost to buy carpet for a rectangular room measuring 6m by 8m?

The carpet costs £12.50 per square metre.

The floor area is 6 x 8 = 48m2

Carpet costs 12.5 x 48 = £600

18

A football field is a rectangle 160m long and 70m wide.

a) Before the game the team has to run around the field twice. How far do they run?

b) The groundsman can water the ground at a rate of 100m2 per minute. How long will it take him to water the entire field?

a) Perimeter of field 460m

So they run 2 x 460 = 920m

b) Area of the field is 11200m2

Time to water is 11200 ÷ 100 = 112 minutes or 1 hour 52 minutes