A conical heap is formed when a farmer pours food grain on ground. the slant height of heap is 35 cm the circumference of base 132 cm. What amount of tarpholin is needed to cover the heap? Farmer goes to the orphangeand gives half of the food grain for the children living there. How much grain farmer donated? List the values you learn from this action.............



CSA = πrl
Circum = 2πr
132= 2 X 22/7 X r
r = 21
CSA = 22/7 x 21 x 35
CSA = 2310
So, needs 2310cm^2 of tarpholin...
To see the donated amount we need to see volume and half it..