Question

if the slant height of a frustum of a cone is 4 cm and radii of its two circular ends are 5cm and 2 cm then its curved surface area​

Answer 1

Answer:

Given → slant weight = 5 cm

Difference between the radii to of two circular ends = 4 cm

To find : height of frustum

(slantHeight)

2 =(Height) 2+(Differenceb/wtheradiitoends) 2(5) 2=(Height) 2 +(4) 2

(Height)2 =(25−16)cm

(Height) 2 =9cm

Height = 13 cm

As height can't be negative so h=−3

Therefore, Height of frustum = 3 cm

Step-by-step explanation:

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