Question

a bucket is 18 cm in diameter at the top and 6 CM in diameter at the bottom if it is 8 centimetre find the capacity also find the area of sheet used in making the bucket

Answer 1

Answer:GIVEN :

Diameter of upper end of bucket =30cm

Radius of the upper end of the frustum of cone( r1) = 15cm

Diameter of lower end of bucket = 10 cm

radius of the lower end of the frustum of cone( r2) = 5 cm

H of the frustum of Cone = 24 cm

Slant height of bucket ( L)= √(h² + (r1- r2)²

L =√24² + (15 - 5)² = √576 + 10²

L =√(576+(100)= √676 = 26cm

L = 26 cm

Area of metal sheet require to make it = π(r1 + r2)L + πr1²

= 3.14(15 + 5) × 26 + π(5)²

= 3.14 × 20 × 26 + 25 × 3.14

= 3.14 (520+ 25)

= 545 × 3.14

= 1711.3 cm²

Read more on Brainly.in - https://brainly.in/question/3111819#readmore

Step-by-step explanation:

Answer 2

Here,

R = 9 cm

r = 3 cm

h = 8 cm

Capacity of the bucket

=

8 (92 + 32 + 93 )

= 312cm3

Area of the metallic sheet used in making the bucket

= Curved surface area of frustum +r2

=[ℓ (R + r)] +r2

=



= 120+ 9= 129cm2