Question

A sheet of paper is in the form of a rectangle ABCD in which AB = 40 cm, and BC = 28 cm. A semi-circlular portion with BC as diameter is cut off. Find the area of the remaining paper.​

Answer 1

Step-by-step explanation:

Given sheet of paper ABCD

AB = 40 cm, AD = 28 cm

⇒ CD = 40 cm,

BC = 28 cm [since ABCD is rectangle]

Semicircle be represented as BMC with BC as diameter

Radius = (1/2) x BC=(1/2) x 28=14cm

Area of remaining (shaded region) = (area of rectangle) – (area of semicircle)