The diameter of the circle is 8 cm. A) Find the circumference (round pi to tenths). b) Area of a circle

univerkov | June 22, 2021 | education

a) The length of the circle (C) is equal to 2 * n * r, where r is the radius of the circle.

If D = 8 cm, then r = 8/2 = 4 cm.

C = 2 * 3.14 * 4 = 25.12 cm.

b) The area of the circle (S) is equal to n * r˄2, where r is the radius of the circle.

S = 3.14 * 4˄2 = 50.24 cm².

Answer: 25.12 cm; 50.24 cm².

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