The height and the slant height of a cone are 12 cm and 20 cm respectively. Find its volume. (????= 3.14)
Answers
Answered by
1
Answer:
3215.36 is answer
Step-by-step explanation:
h= 12 cm l =20 cm
l(square)= r(square) + h(square)
400 = r(square) + 144
400-144 = r(square)
256 =. r(square)
r = 16
now
volume of cone = 1/3 ×π r(square)× h
= 1/3×3.14×256×12
= 3215.36cm(cube)
Answered by
3
Answer:
3215.36 cm³
Step-by-step explanation:
Slant height of the cone = 20 cm (Given)
Height of the cone = 12 cm (Given)
By Pythagoras Theorem -
r² + Height² = (slant height)²
r² + 12² = 20²
r² + 144 = 400
r² = 400 – 144
r² = 256
r = 16 cm
Volume of cone = 1/3πr²h
= 1/3 × 3.14 × 16 × 16 × 12
= 3.14 × 16 × 16 × 4
= 3215.36 cm³
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