A bucket made up of a metal sheet is in the form of a frustum of a cone ofheight 16 cm with radii of its lower and upper ends as 8 cm and 20cm respectively. Find the cost of the bucket if the cost of metal sheet used is 15 per 100 cm".
Answers
Answered by
0
Answer:
Step-by-step explanation:
26400 ans find l and then use formula
Answered by
0
Step-by-step explanation:
Find the volume:
Volume=π/3h (R^2+r^2+R x r)
π/3 (16) (20^2+8^2+20 x 8)
= 1059.43cm^2
Find the surface area:
SA= π(R+r)root (20-8) ^2+16^2
=1760 cm^2
Find the cost:
100 cm² = Rs 15
1 cm² = 15 ÷ 100 = Rs 0.15
1760 cm² = 0.15 x 1760 = Rs 264
Answer: (a) Volume = 10459.43 cm³ (b) cost of the metal sheet = Rs 264
Similar questions