Q. 294.4( 5 Votes )

The radii of circ

Answer :

First, we will draw the bucket as per the given data,

Given the height of the bucket, h = 24cm

Radius of the upper end, r1 = 15cm

Radius of the lower end, r2 = 5cm

So, the slant height, l of the bucket can be calculated using the below formula

Now substituting the corresponding values, we get

l = 26cm

Now we know the curved surface area of a frustum is

= π(r1 + r2)l

Substituting the corresponding values, we get

= π (15 + 5) (26)

= π (20) (26)

= π (520)

= 3.14 × 520

= 1632.8

≈ 1633cm2

Hence the curved surface area of the bucket is 1633cm2.

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