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Step-by-step explanation:
(i) Total area = Area of the rectangle + Area of the semicircle
= (l×b) + 1/2 (πr²)
= ( 4 × 3 ) + 1/2 ( π × 16 )
= 12 + 8π
= 12 + 25.12
Area. = 37.12 m². -------------------------------- (1)
(ii) Total Area = (1) + area of semicircle of radius 2 cm
= 37.12 + 1/2 (π r²)
= 37.12 + 1/2 ( π × 4 )
= 37.12 + 2π
= 37.12 + 6.28
Area = 43.4 m²
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