How much cloth will be required to cover 2 small domes each of radius 4.2 metres? (Take pie = 22/7).
Answers
Answered by
3
Step-by-step explanation:
area of 1 dome =3×22/7×4.2×4.2
22×3×4.2×0.6
166.32m^2
area of 2 domes=166.32×2
= 232.64m^2
hence 232.64m^2 cloth is used
Answered by
1
Step-by-step explanation:
Given ,
the radius of each domes = 4.2m
we know that
Curved surface area of hemisphere domes = 2πr²
The clothes material required to cover 2 small domes each of radius 4.2m
= 2 (curved surface area of hemisphere domes)
= 2 × 2πr²
= 4 × 22/7 × (4.2)²
= 4 × 22/7 × 17.64
= (70.56×22)/7
= 1,552.32/7
= 221.76 m²
The 221.76 m² clothe materials will be required to cover 2 small domes each of radius 4.2m
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