Question

A 5m wide cloth is used to make a conical tent of base daimeter 14m and height 24m. Find the cost of the cloth used at the rate of 25 per meter

Answer 1

total surface area is π r l
so l sqr=r sqr+h sqr
49 +576=625root=25 metre.
tsa=22/7*7*25=550metres..
so cost will be 25 *550=13750 ₹