CBSE Class 10CBSE
Share
Notifications

View all notifications

If the Radii of Circular Ends of a Bucket 24cm High Are 5cm and 15cm. Find Surface Area of Bucket? - CBSE Class 10 - Mathematics

Login
Create free account


      Forgot password?

Question

If the radii of circular ends of a bucket 24cm high are 5cm and 15cm. find surface area of
bucket?

Solution

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

`l=sqrt((r_1-r_2)^2+h^2)`

⇒`l=sqrt((15-5)^2+24^2`

⇒`l=sqrt(100+576) =sqrt(676)`

l=26cm

Curved surface area of bucket `=pi(r_1+r_2)l+pir_2^2`

= π(15+5)26+π(5)2

= π(20)26+π(5)2

= π(520+25)

= 545π cm2

∴ Curved surface area of bucket = 545π cm2

  Is there an error in this question or solution?

APPEARS IN

 RD Sharma Solution for 10 Mathematics (2018 to Current)
Chapter 14: Surface Areas and Volumes
Ex. 14.30 | Q: 7 | Page no. 78
Solution If the Radii of Circular Ends of a Bucket 24cm High Are 5cm and 15cm. Find Surface Area of Bucket? Concept: Surface Area of a Combination of Solids.
S
View in app×