Question

Bucket open at the top, and made up of a metal sheet is in the form of a frustum of
a cone. The depth of the bucket is 24 cm and the diameters of its upper and lower
circular ends are 30 cm and 10 cm respectively. Find the cost of metal sheet used in it
at the rate of Rs 10 per 100 cm2

.[Use π = 3. 14].

Also why should we divide the answer by 100 at the end ? Its urgent please help

Answer 1

heyyy here is your answer...

R=15 And r= 5

l=

$\sqrt{576 + 100 }$

= 26....

now curved surface area=

3.14(20*26)+25

1711.3...

now

1711.3/100*10= rs 171.13...

answer

we need to divide it by 100 because the cost is given as Rs10 per 100 cm2....

I hope u understand...