Question

Sam cut grass at $0.10 per square metre

How much does sam earn cutting this area?

Answer 1

Answer:

Step-by-step explanation:

Let's break the area into two parts:

area grass in parts

Part A is a square:

Area of A = a2 = 20m × 20m = 400m2

Part B is a triangle.

it has a base of 20m and a height of 14m.

Area of B = ½b × h = ½ × 20m × 14m = 140m2

So the total area is:

Area = Area of A + Area of B = 400m2 + 140m2 = 540m2

 

Sam earns $0.10 per square metre

Sam earns = $0.10 × 540m2 = $54

Answer 2

Answer:

Part A is a square:

Area of A = a2 = 20m × 20m = 400m2

Part B is a triangle. Viewed sideways it has a base of 20m and a height of 14m.

Area of B =12(×ℎ) = 12(20×14) = 140m2

So the total area is:

Area = Area of A + Area of B = 400m2 + 140m2 = 540m2

Sam earns $.0.10 per square meter

Sam earns = $.0.10 × 540m2 = $54

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