tank then hind volume of water drawn out.
14.
A hollow hemispherical vessel has external and internal radius as 43 cm and 42 cm, respectively
. If
of colouring it, is 7 paisa per square cm. then find cost of painting the vessel plz solve it
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let inner radius = ŕ
&outer radius =Ŕ
final radius (Ř) = ŕ + Ŕ
Ř = 43 + 42
Ř= 85
Total surface area of hemispherical vessel = 3πr2
= 3× 22/7 ×(85)²
= 3×22/7 × 7225
= 476850/ 7
= 68121.4 cm²
COST OF PAINTING = 7 × TSA.
= 7× 68121.4
= Rs 476849.8
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