10. A rectangular sheet of paper 40 cm x 22 cm, is rolled to form a hollow cylinder of height 40 cm.
The radius of the cylinder (in cm.) is:
(a) 2
(b) 2.5
(C) 3
(d) 3.5
1
Answers
Answered by
0
Answer:
it will be 3.5cm. If you are rolling a paper along 40cm length, in that case 22cm will form the circumference of circle. So, 2*22/7*r=22, leading to r=3.5cm, where r is radius of the circle
Similar questions