Question

The radii of circular ends of a bucket of height 24 cm are 15 cmand 5 cm. Find the area ofits curved surface.

Answer 1

Answer :

Given height of a bucket (R) = 24cm  

Radius of circular ends of bucket 5cm and 15cm

r1 = 5cm; r2 = 15cm

Let ''l be slant height of bucket

Curved surface area of bucket = 745π cm2

Answer 2

Answer:

1634.3 cm² .

Step-by-step explanation:

Let radii be R and r .

It is given R = 15 cm , r = 5 cm and h = 24 cm

We know slant height :

l = [ √ h² + ( R - r )² ]

l = √ 24² + 10²

l = 26 cm .

Now ,

C.S.A. = π ( R + r ) l

= 3.14 × 20 × 26 cm²

= 1634.3 cm² .