Question

a covering paper of width 4 m is used completely cover 20 cylindrical boxes ,each of base radius 56 cm and height 1.5m.How much length of covering paper will be required to cover them all?​

Answer 1

Answer:

Given:

Radius r=7m, height =3m

We need to find the total surface area of a cylinder

=2πr(r+h)

=2×

7

22

×7(7+3)=440 sq meter

So, 440 sq m sheet of metal is required

Answer 2

Answer:

Given:

Radius r=7m, height =3m

We need to find the total surface area of a cylinder

=2πr(r+h)

=2×

7

22

×7(7+3)=440 sq meter

So, 440 sq m sheet of metal is required.