Math, asked by h1ardakhabujaharshi, 1 year ago

A CUBICAL BLOCK OF SIDE 10CM IS SURMOUNTED BY A HEMISPHERE.WHAT IS THE LARGEST DIAMETER THAT THE HEMISPHERE CAN HAVE? FIND THE COST OF PAINTING THE TOTAL SURFACE AREA OF THE SOLID SO FORMED,AT THE RATE OF rs5 PER 100SQ.CM

Answers

Answered by santy2
283
The largest diameter of he hemisphere = 10cm since it will be touching the sides of the cubical block.

Surface area = Surface area of the cube - area of circular part of the hemisphere + surface area of the hemisphere
= 10 x 10 x 6 - 22/7 x 5² + 2 x 22/7 x 5²
= 600 - 78 4/7 + 157 1/7
= 678 4/7 cm²

Cost of painting = (678 4/7 ÷ 100) x 5 = Rs. 33.93
Answered by madhan15
72
I may be correct answer
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