Math, asked by vinay1900, 1 year ago

A container made of a metal sheet open at the top is of the

form of frustum of cone, whose height is 16 cm and the radii of

its lower and upper circular edges are 8 cm and 20 cm

respectively. Find the cost of milk at the rate of < 35 per litre

which can fill it completely

Answers

Answered by avash37
2
A container made of a metal sheet open at the top is of the

form of frustum of cone, whose height is 16 cm and the radii of

its lower and upper circular edges are 8 cm and 20 cm

respectively. Find the cost of milk at the rate of < 35 per litre

which can fill it completely
Attachments:
Answered by wifilethbridge
0

The cost of milk which can fill it completely is Rs.365.7472

Step-by-step explanation:

Height of frustum = h = 16 cm

Lower radius = 8 cm

Upper radius = 20 cm

Volume of frustum = \frac{1}{3} \pi \times h(R^2+r^2+rR)

Volume of frustum =\frac{1}{3} \times 3.14 \times 16 (20^2+8^2+8 \times 20)

Volume of frustum =10449.92 cm^3

1000 cubic cm = 1 liter

1 cubic cm =\frac{1}{1000}

10449.92 cubic cm =\frac{1}{1000} \times 10449.92=10.44992 liters

Cost of 1 liter milk = Rs.35

Cost of 10.44992 liters milk = 35 \times 10.44992 =Rs.365.7472

Hence  the cost of milk which can fill it completely is Rs.365.7472

#Learn more:

A metal container, open from the top, is in the shape of a frustum of a cone of height 21 cm with

radii of its lower and upper circular ends as 8 cm and 20 cm respectively. Find the cost of milk

which can completely fill the container at the rate of Rs 35 per litre.

https://brainly.in/question/2310340

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