Question

two semicircles are used to make the shaded shape below one semiciricle has a diameter of 16 cm and the other has a diameter of 20 cm work out the area of the shaded shape

Answer 1

Answer:56.556cm^2

Explanation:
okay so you need to find out the area of the bigger circle (the 20cm one)

the area of finding a semi circle is (πxR^2)/2

so we do 3.142x10^2 and then divide it by 2 to get 157.1cm^2

then we do this for another semi circle so we do 3.142x8^2 and divide it by 2 to get 100.544cm^2

so then to finish it off we do 157.1-100.544 to get 56.556cm^2