a hemispherical dome of temple is to be painted from outside the radius of the Dome is 3.5 M find the cost of painting @ rupees 25 per metre square
a hemispherical dome of temple is to be painted from outside the radius of the Dome is 3.5 M find the cost of painting @ rupees 25 per metre square
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Given : a hemispherical dome of temple is to be painted from outside
the radius of the Dome is 3.5 m
To Find : the cost of painting @ rupees 25 per m²
Solution:
outer Surface area of hemispherical dome = 2πR²
π = 22/7
R = 3.5 = 7/2 m
Surface area = 2(22/7)(7/2)²
= 77 m²
cost of painting @ rupees 25 per m² = 25 x 77
= 1925
cost of painting = Rs 1925
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Verified answer
Radius of the circle (dome) = 3.5mCurved surface area of dome =
That is :
=2*22/7*3.5*3.5
=2*22*3.5*0.5
=22*3.5
=77m²
Cost of painting = 25*77
= rs. 1925
Hope this will be helping you