Question

a cylindrical pillar 70 cm in diameter and 4m height is to be cemented All Around The curved surface find the cost of cementing it at the rate of 32 per metre square please help kijiye ish ka answer hai 281.60 hoga please copy mein solve kijiye pic send kijiye please​

Answer 1

hey here is your answer.

hope it helps. ..

Answer 2

The cost of cementing it is Rs.281.6

Step-by-step explanation:

Diameter of cylindrical pillar = 70 cm

Radius of cylindrical pillar=$\frac{70}{2}=35 cm$

100 cm = 1m

So, Radius of cylindrical pillar= 0.35 m

Curved surface area of cylindrical pillar =$2 \pi r h = 2 \times \frac{22}{7} \times 0.35 \times 4=8.8 m^2$

Cost of cementing 1 sq.m. = Rs.32

Cost of cementing 8.8 sq.m. =$32 \times 8.8=Rs.281.6$

Hence the cost of cementing it is Rs.281.6

#Learn more:

The total surface area of cylinder is 462cm square. it curved surface area is one third of its total surface area . find the volume of cylinder

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