Question

Savitri had to make a model of cylindrical kaleidoscope for her science project ,She wanted to use chart paper to makr the CSA of kaleidoscope .What would be the area of Chart paper if she wanted its length 25 cm with a 3.5 cm radiud.​

Answer 1

Answer:

Given that ,

• Radius of the base of cylindrical Keidoscope = 3.5 cm

• Height means length of Kaleidoscope = 25cm

We know that ,

• Curved Surface area of Cylinder = 2πrh

= 2 * 22/7 * 3.5 * 25

= 550 cm²

Thus , Area of chart paper required is 550 cm²

♥Hope it helpful to you♥