Question

 The perimeter of the base of a cylinder is 44cm and height is 10cm.The curved surface area is______

Answer 1

Perimeter of the base of the cylinder = circumference of the circle
44 = 2$2 \pi r$
Radius= 7 cm
Curved surface area of the cylinder = 2*22/7*7*10 = 440cm²

Answer 2

The curved surface area of the cylinder is 439.6 $cm^{2}$

Step-by-step explanation:

Given:

The perimeter of the base of the cylinder= 44cm

Height= 10cm

To find= the curved surface area

Solution:

The formula for the perimeter of the circle= 2πr

So, 2πr= 44

r= 44÷2×3.14

r= 7 cm

The curved surface area of the cylinder is : 2πrh

Putting the values:

2×3.14×7 × 10

140× 3.14

The curved surface area of the cylinder= 439.6 $cm^{2}$

Result:

Thus, the curved surface area of the cylinder is 439.6 $cm^{2}$

(#SPJ3)