Solution
a) The formula to calculate the circumference of a circle is given by 2 * π * r, where r is the radius of the circle. Plugging in r = 3.5 cm, we get:
C = 2 * π * 3.5 cm = 7 * π cm = 22.0 cm (approximately)
b) The formula to calculate the area of a circle is given by π * r^2, where r is the radius of the circle. Plugging in r = 4.65 cm, we get:
A = π * 4.65^2 cm^2 = π * 21.6225 cm^2 = 69.63 cm^2 (approximately)
No comments:
Post a Comment