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Find (i)the lateral or curved surface …

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Find (i)the lateral or curved surface area of aclose cylindrical petrol storage tank that 4.5 m high. (Ii)how much steel was actually used ,if 1/2of the steel actually used was wasted in making the tank

Posted by Rimbi Katharpi Katharpi 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Radhika Jasti 5 years, 4 months ago

1-1\12 ofx=11/12 of x 11/12×x=87•12 x=87•12×12/11=95•04

0Thank You

Radhika Jasti 5 years, 4 months ago

Here r=4•2\2=2•1 and h=4•5 csa of cylinder=2πrh=2×22\7×2•1×4•5=59•4 steel used=2πrh+2πrr 59•4+2×22\7×2•1×2•1 59•4+27•72=87•12

0Thank You

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CBSE > Class 09 > Mathematics