Question

A rectangular sheet of paper 40×22cm is rolled to form a hollow cylinder of height 40cm. find the radius of the cylinder

Answer 1

${\pink{\mathbb{hOlA}}}$

The breadth of rectangle will become the circumference of the circle.

To find:-

Radius(r)

Circumference of circle=2πr

$22=2×{\frac{22}{7}}×r$

${\frac{22}{2}}={\frac{22}{7}}r$

$11={\frac{22}{7}}r$

11×7=22r

77=22r

$r={frac{77}{22}}$

${\bf{\green{r=3.5cm}}}$

$<marquee>$#Bebrainly☺️❤️