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A cyclindrical pilliar is 50cm in …

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A cyclindrical pilliar is 50cm in diameter and 3.5cm in height? Find the cost of painting the curved surface area of pilliar at the rate of rupees 10 per m×m

Posted by Meenakshi Kansal 6 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Ram Kushwah 6 years, 11 months ago

Check yr question the pillar is not seem to be 3.5 cm in height.

I tak e height h=3.5 m

r=50 cm=50/100=1/2 m

CSA =2πrh=2×22/7×1/2×3.5

=44/7×1/2×7/2=11 m²

Cost of painting =11×10=110 Rs

0Thank You

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CBSE > Class 08 > Mathematics