Question

some poor children use recycled paper to make conical party caps with radius 7cm and slant height 15cm and sell it on street stall.
(a)How much would they earn profit by selling 50 caps? the selling price of cap is 50paise per cm square?
(b)Which value is depicted by the children?


please answer fast

Answer 1

(a) radius of cap =7
slant height =15
curved surface area of cone= πrl
22÷7×7×15
= 330cm sq
profit earn by poor children =50×330
=16500paise
=rs165
(b) value depicted by poor children is to recycle the waste thing to use thing again

Answer 2

Radius=7cm
slant height=15cm
by using formula:
= πrl
=22/7*7*15
=330cm*cm
1cm square=50paise
330cm square=330*50
=16500paise
=(16500/100)ruppee
=165rupees