Question

From a rectangular piece of paper 20 cm long and 14cm wide, a circle of maximum
area is cut out. Find the area of the paper left after cutting out the circle.

Answer 1

Step-by-step explanation:

$area \: of \: the \: paper \: left \: after \: cutting \: out \: the \: circle \\ = area \: of \: rectangle - area \: of \: circle \\ = 20 \times 14 - \frac{22}{7} \times {7}^{2} \\ = 280 - 22 \times 7 \\ = 280 - 154 \\ = 26cm \: sq.$