Question

1 If you want to make a kalidoscope of
lenght 25cm with a 35 croradius how much

orce of chart paper required?
​

Answer 1

Answer:550 cm

Step-by-step explanation: Area of chart paper required = CSA of cylinder

                                                    = 2πrh

                                                   = 2×

7

22

​

×3.5×25

                                                   = 550 cm

Answer 2

Answer:

550 cm2

Step-by-step explanation:

Let r be the radius and h be the height of the cylinder. Then,

r=3.5 cm

h=25 cm

Area of chart paper required = 2πrh=2× 22/7×3.5×25=550 cm2