In order to find the value of the circumference and area of the given circle, use the following formulas:
C = 2πr circumference
A = πr² area
where
r: radius = diameter/2 = 8 cm/2 = 4 cm
π = 3.14
replace the value of r and π into the formulas for C and A:
C = 2(3.14)(4 cm) = 25.12 cm
A = (3.14)(4 cm)² = 50.24 cm²
Hence, the cirumference of the circle is 25.12 cm and its area is 50.24 cm²