Question

a cone shaped fire work are of base diameter 10 centimeter and height 12 centimeter. 10000 such fire works are to be wrapped in colour papper. the price of papper is 2 rupeez per square meter. what is the total cost of wrapping
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Answer 1

Side of the square = 5 cm

Base of the isosceles triangle = 5 cm

Height of the isosceles triangle = 8 cm

Area of the square = (side)2 = (5 cm)2 = 25 cm2

Area of one isosceles triangle =

Area of four isosceles triangles = 20 × 4 cm2 = 80 cm2

Area of the square pyramid = Area of the square + Area of four isosceles triangles

= (25 + 80) cm2

= 105 cm2

Thus, we need 105 cm2 paper for the job.

Answer 2

Step-by-step explanation:

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