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 5720 cm2, how many caps can be
made with radius 5 cm and height 12 cm
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Answer:
28 caps can made with this sheet
Step-by-step explanation:
(22/7) *lr= one cap
l^2 = h^2 +r^2
l^2 = 25+144=169
root 169 =13
l=13
(22/7) *13*5= one cap
=65* 22/7
one cap = 204.1 cm^2
whose area is 5720 cm2
5720/204.1=28
28 caps can made with this sheet
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