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Calculating area and perimeter

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What is this shape and what is the area?

Kite, 4 cm2

What shape is this and what is the area

Rhombus, 9.61m2

What shape is this and what is the area?

Trapezium, 560 mm2

What is the area of this composite shape?

31.5m2

A landscape gardener charges $20 per square metre of lawn. A lawn area is in the shape of a rhombus and its diagonals are 8 m and 14.5 m. What would be the cost of laying this lawn?

[Area = 58m2] [Cost of landscaping = $20m2] therefore, 20 x 58 = $1160.

The area of a garden is 40 cm2. The width of the garden is 5cm. What is the perimeter of the garden?

5 x 8 = 40cm2. 5+5+8+8 = 26 cm

The perimeter of a square box is 24 cm. What is the area of the box?

6 x 6 = 36cm2

Find the area of the shaded area in this composite shape

(10x6) - (2x7) = 46km2

What shape is this and what is the area?

(13 x 6 ) / 2 = 39cm2

Convert this area measurement: 8,000,000 m2 (km 2)

8,000,000/1,000,000 = 8 km2

Convert this area measurement: 0.0051 m2 (cm2)

0.0051 x 10,000 = 51 cm2

Convert this area measurement: 700 cm2 (m2)

700/10,000 = 0.07 m2

Calculate the area of this composite shape

(10+16) x 7 /2 = 91 cm2

What is the perimeter?

5.1+5.1+9.6+9.6 = 29.4 m

What is the perimeter?

10 + 10 + 3 + 3 + 6 = 32 cm

Jennifer needs to fence her country house block to keep her dog in. The block is a rectangle with length 50 m and width 42 m. Fencing costs $13 per metre. What will be the total cost of fencing?

[P = 50+50+42+42 = 184m] x $13 per metre = $2392