" Q1a.) Find the perimeter of a semicircle with radius "7" cm."

Find the perimeter of a semicircle of radius 7 cm.

Find the perimeter of a circle of radius 7cm.

Find the perimeter (in cm) of semicircle of radius 28 cm.

Find the area and the perimeter of the semicircle whose radius is 14 cm.

Find the area (in cm^(2) ) of a semicircle of radius 35 cm.

Find the area (in cm^(2) ) of a semicircle of radius 21 cm.

AB is the diameter of a semicircle with length of radius 4 cm C is any point on the semicircle. If BC = 2sqrt7 cm then find the length of AC.