Question

a square piece of a paper whose side is 10 cm is rolled to form a cylinder . find the curved surface area of the cylinder so formed

Answer 1

Answer:

Step-by-step explanation:

check out the image.

Answer 2

Answer:

314.285 sq.cm.

Step-by-step explanation:

We are given that a square piece of a paper whose side is 10 cm is rolled to form a cylinder .

So, height of cylinder = 10 cm

Radius of cylinder =$\frac{10}{2}= 5 cm$

Curved surface area of cylinder=$2 \pi r h = 2 \times \frac{22}{7} \times 5 \times 10 =314.285$

Hence the curved surface area of the cylinder so formed is 314.285 sq.cm.