Question

The slant height of frustum of a cone if height 8cm and base radii 10cm and 4cm

Answer 1

Answer:

2cm is the correct answer

Answer 2

Given :- The slant height of frustum of a cone if height 8cm and base radii 10cm and 4cm ?

Solution :-

→ height = h = 8 cm

→ radius = r1 = 10 cm

→ radius = r2 = 4 cm

let,

→ slant height = l cm

so,

→ l = √{h² + (r1 - r2)²}

→ l = √[8² + (10 - 4)²}

→ l = √(64 + 36)

→ l = √100

→ l = 10 cm (Ans.)

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