Question

From the square card board of side 21 cm,a circle of a maximum area is cut out.Find the area of the cardboard left.If diameter of the maximum area=21 cm

Answer 1

area of square =side ×side
=21×21=441 cm sq.
area of circle=
$pir {}^{2}$
=346.5 cm sq.
so cardboard left =area of square-area of cirlce=441-346.5
=94.5 cm sq.
hope it helps u..

Answer 2

area of square = side *side
=21 * 21 =441 cm sq
area of