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Stels [109]
2 years ago
11

A piece of cloth is required to completely cover a solid object. The solid object is composed of a hemisphere and a cone surmoun

ted on it. If the common radius is 7 m and height of the cone is 1 m, what is the area of cloth required?
A) 262.39m2
B) 463.39m2
C) 662.39m2
D) 563m2
pls help me! :(​
Mathematics
1 answer:
Otrada [13]2 years ago
8 0

Answer:

  • ▶(B) 463.39 m²
<h3>Step-by-step explanation:</h3>

\space

Surface area of hemisphere = 2πr²

=> 2×22/7× (7)² = 308 m²

☯<u>For calculating the surface area of a cone we need to calculate its slant height,</u>

\sf{ \leadsto \: 1 =  \sqrt{49 + 1}  =   \sqrt{50 \: } m}

\space

\sf{ \leadsto \: \pi \ r1 =  \frac{22}{7} \times 7  \times  \sqrt{50}  = 463.39 \:  {m}^{2}  }

\:  \:

Hope it helps!

Have a great day! :)

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