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Circumference of a base of a 1.5 m high pillar is 60 cm. Find the cost of painting its surface at Rs.10/m2 .

Posted by Siddharth Sarda 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Ff_Girl Tannu 4 years, 6 months ago

H= 3.5 , R = 50/2=25 cm 25/100= 0.25 Curved Surface Area= 2πrh = (2 x 22/7 x 0.25 x 3.5 )m^2 = 5.5 m^2 Cost of painting 1 m^2 area = Rs.12.50 Cost of painting 5.5 m^2 area = Rs.5.5×12.50 = Rs.68.75

4Thank You

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