Question

I need to find the area.

Answer 1

Explanation:

side of square=10+10+20=40 m

area of square=40×40=1600 m²

area of small square=π10²=100 π m²

area of bigger semi circle=1/2 ×π×20²=200 π m²

reqd. area of shaded region=1600-(100π+200π)=1600-300π m²

≈1600-300×3.14

≈1600-942

≈658 m²