Ram has a hemispherical bowl of radius 7 cm. if one bottle of paint can paint 14 cm2, then how many bottles are needed to paint the bowl from outside?
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Answered by
3
r=7
outer CSA= 2πr2
2 ×π ×7×7= 308 cm2
bottles required = 308/14
22 bottles
outer CSA= 2πr2
2 ×π ×7×7= 308 cm2
bottles required = 308/14
22 bottles
Answered by
5
Solution :-
Radius of th hemispherical bowl = 7 cm
Outer curved surface area of hemisphere = 2πr²
⇒ (2*22*7*7)/7
= 308 cm²
To cover area of 14 cm², paint needed = 1 bottle
To cover area of 1 cm², paint needed = 1/14
To cover area of 308 cm², paint will be needed = (1*308)/14
= 22 bottles
Answer.
Radius of th hemispherical bowl = 7 cm
Outer curved surface area of hemisphere = 2πr²
⇒ (2*22*7*7)/7
= 308 cm²
To cover area of 14 cm², paint needed = 1 bottle
To cover area of 1 cm², paint needed = 1/14
To cover area of 308 cm², paint will be needed = (1*308)/14
= 22 bottles
Answer.
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