The diameter of a garden roller is 1.2 m and it is 2 m long. How much area will it cover in 5 revolutions ? (use Ï€ = 22â„7)
Options:
A) 40 m 2
B) 44 m 2
C) 48 m 2
D) 37.7 m 2
E) none of these

Rationale: required area covered in 5 revolutions = 5 ã — 2 ï € rh = 5 ã — 2 ã — 22 â  „ 7 ã — 0.6 ã — 2 = 37.7 m 2 answer d
Answer: D