Question

The difference in radii of the two end in frustrum 5cm . if it's height is 12cm what is the sleigh height of the frustrum

Answer 1

Answer:

13 cm

Step-by-step explanation:

Refer to attached file for explanation,

Here,

• slant height = l
• difference in radii = r
• height = h

$l {}^{2} = h {}^{2} + r {}^{2}$

$l { }^{2} = 12 { }^{2} + 5 {}^{2} = 144 + 25 = 169$

$l = \sqrt{169 } = 13$

13 is positive , because distance cannot be negative.

Therefore, Slant Height of Frustum = 13 cm

Hope this answer helps you ^_^ !