Question

a cylindrical tower is 5metres in diameter and 14 meters high. the cost of white washing it's curve surface at 50 paise per b m2​

Answer 1

Diameter= 5m

Radius= 5/2m

Height = 14m

C. S. A = 2πrh

= 2 × 22/7 × 5/2 × 14

= 220m²

Cost of white washing = 50p

= 220 × 50p

= 220 × 50/100

(1p = 1/100 rupees) = 110 rupees

So, the white washing of cylindrical towering in C. S. A is 220m² = 110 rupees

( Here p = paise)

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