Question

A circle of diameter 14 cm was cut out of a square of cardboard with 20 cm sides. The area of the remaining piece of cardboard is given by "a" × 10b in cm2

Answer 1

Answer:

246.06 cm².

Explanation:

Given,

Diameter of circle, d = 14 cm

Sides of cardboard = 20 cm

Area of the remaining piece = Area of square cardbord- Area of circle

=$side^2-\frac{\pi}{4}d^2$

=$20^2-\frac{\pi}{4}\times14^2$

=246.06 cm²

Hence, the area of the remaining piece of cardboard is 246.06 cm².