Question

A semicircle has a diameter of 18 centimeters. What is its area? (Use 3.14 for pi)

Answer 1

key

Answer 2

the diameter is 2 times the radius
so take the diameter and divide by 2 and plug the radius in the area formula for a circle

the Area of circle is:

pir^2 = A

and then divide that area by 2 because it is a semi ( half) circle

Answer 3

that is not one of the answer i have to put in sorry

Answer 4

28.6

Answer 5

18 /2 = 9

3.14)(9)^2 = A
A= 254.34

254.34/2

Area for semi 127.17 cm^2

Answer 6

thanks