7. Find the area of each shape correct to one decimal place. (Use 3.14 for pi)
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Step-by-step explanation:
i)
Area = area of semi circle + area of rectangle
A = 1/2 x pi x r^2 + l x b
A = 1/2 x 3.14 x 2^2 + 3 x 4
A = 6.28 + 12
A = 18.28
ii)
Area = area of s.semi circle + rectangle + big semi circle
A = 1/2x3.14x1 + 3x4 + 1/2x3.14x2^2
A = 1.57 + 12 + 6.28
A = 19.85
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