Question

a girl wishes to prepare birthday caps in the form of right circular cones for her birthday party , using a sheet of paper whose area is 5720cm2 , how many caps can be made with radius 5 cm and height 12 cm​

Answer 1

just use the formula for volume

and n be the no of caps

5720 = 1/3 π r²h* n

n = 18 caps

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