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Find area of these shades regions

Find area of these shades regions-example-1
User Tmsimont
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1 Answer

5 votes

Answer:

11. 379.6 ft²

12. 450.5 in.²

Explanation:

11.

shaded area = area of square - area of semicircle

side = 25 ft

radius = 12.5 ft

shaded area = s² - 0.5πr²

shaded area = (25 ft)² - 0.5 × 3.14159 × (12.5 ft)²

shaded area = 379.6 ft²

12.

shaded area = area of circle - area of triangle

radius = 0.5 ×√(20² + 21²) in. = 14.5 in.

base = 20 in.

height = 21 in.

shaded area = πr² - bh/2

shaded area = 3.14159 × (14.5 in.)² - (20 in.)(21 in.)/2

shaded area = 450.5 in.²

User Ram K
by
8.8k points

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