Question

the radii of circular ends of frustum of a cone are 20 cm and 12 cm and its slant height is 10 cm. Find the height of the frustum in cm. ( you will get 100 points)

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

r1= 20 cm

r²= 12 cm

l²= 10cm

h²= ?

therefore,

• l²= (r1 - r²) + h²
• (10)² ( 20 cm -12 cm)² + h ²
• 10² = 8 ² + h²
• 100= 64+ h²
• 100-64= h²
• 36= h²
• ✓36=h
• 6=6.

Step-by-step explanation:

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