ABC26GN4925 · Volume and Surface Area

Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: · Marks: · Difficulty:

The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it cover in 5 revolutions ?

(a)36 m2

(b)40 m2 2

(c)44 m

(d)48 m2

Answer

Answer (as printed): C

Explanation

Curved surface area of the roller  22  = 2 × × 0.7 × 2  m 2 = 8.8 m 2 .  7  \ Area covered in 5 revolutions = (8.8 × 5) m2 = 44 m2.

Explanation as extracted from the printed page; notation may be imperfect.