Question

the base area of a cone is 38.5 CM square its volume is 77 cm cube find its height

Answer 1

Answer:

Step-by-step explanation:

Given base area of cone is 38.5 cm,

Volume is 77 cm³.

By the problem , 

22/7×r² = 38.5 cm

r² = 38.5×7/22

r² = 12.25

r = √12.25 = 3.5 cm

Now, 1/3 × 22/7 r²h = 77 cm³

⇒1/3×22/7×(3.5)²×h = 77

⇒22/21 × 12.25 × h = 77

⇒ h = 77×21/22× 1/12.25

⇒h = 6 cm

Answer 2

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