A ball of radius 1 cm is put into a cylindrical pipe so that it fits inside the pipe If the length o...........

Quantitative Aptitude (CDS) Mensuration 3D

A ball of radius 1 cm is put into a cylindrical pipe so that it fits inside the pipe. If the length of the pipe is 14 m, what is the surface area of the pipe?

2200 square cm

4400 square cm

8800 square cm

17600 square cm

छोटे Courses बड़े Results

Master Mensuration 3D

Prepare through Micro-courses

Try Now

Explanation:

Radius of cylinder (r) = 1 cm
Height of cylinder (h) = 14 m
= 14 × 100= 1400 cm
Surface area of cylinder = 2 $\pi$ rh +2 $\pi$ r²
= 2 $\pi$ (1 × 1400 + 12)
= 2 $\pi$ (1400 + 1)
= 2 ×22/7× 1401
≈ 8800 cm²