A hemispherical dome is whitewashed from the inside at rs 308 at the rate of rs 4 per m^2. find the inner surface area and also the volume.
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Answer:
DIY( DO IT YOURSELF)
Area of Road = Area of Circle1 – Area of Circle2
= πR² - πr²
(R = 75/2 = 37.5m,
r = 37.5 – 3.5 = 34m)
= 22/7 (37.5 × 37.5 – 34 × 34)
= 22/7 × 250.25
= 5505.5/ 7
Area of Road = 786.5 m²
Cost of Construction @200 per m²
= 786.5 × 200
= Rs. 157300
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