Question

Radius of the roller is 35 cm and length of the roller is 2 metre. How much area will the roller cover in 50 revolutions.

Answer 1

Answer:

Step-by-step explanation:

C.S.A = 2 pi r h

= 2 multiply 22/7 multiply 35 multiply 200

= 44000cm^2

Total area = 44000 multiply 50

= 2200000 cm^2

Answer 2

Answer:

● Hi ... here is your answer ●

Step-by-step explanation:

$given \: diameter \: of \: roller \: 35cm \: and \: length \: is \: 2m \: \\ then \: radius \: of \: roller \: = \frac{70}{2} \\ = 35 \: = 0.35m \\ then \: surface \: area \: of \: roller \: = 2 \times \frac{22}{7} \times (0.35) \times 2 \\ = 4.4 {m}^{2} \\ then \: area \: covered \: by \: roller \: in \: 50 \: revolution \: = 50 \: times \: 4.4 \\ = 220 \: sqm$

Hope it helps you. .. ✌