Question

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Answer 1

Answer:

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Step-by-step explanation:

The diameter of the base of metallic cone is 2 cm and height is 10 cm. 900 such cones are molten to form 1 right circular cylinder whose radius is 10 cm. Find total surface area of the right circular cylinder so formed. (Given π = 3.14)

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Answer 2

Answer:

the total surface area is 748 cm²

Step-by-step explanation:

Total surface area of a cylinder is 2pi r×(r+h)

Diameter is 14 so radius is 7

Height is 10

So, total surface are = 2× pi × 7×(7+10)

= 2 ×(22/7) × 7 × 17

= 2 × 22 × 17 = 748 cm²

If value of pi is given to be 3.14 then , the total surface area is 747.32 cm²