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

246.06 cm².

Step-by-step 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-(\pi)/(4)d^2`

=
`20^2-(\pi)/(4)*14^2`

=246.06 cm²

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