Answers

2016-04-07T08:07:48+05:30
Let the radius of the cone = 5x
height of the cone = 12x
volume of cone = 2512 =1/3πr²h
 \frac{1}{3}  ×  \frac{22}{7}  × 25x² × 12x  =  2512
 \frac{88*25}{7}  × x³ = 2512
x³ = 8
x = 2
radius = 10 cm
height = 24 cm
slant height² = 24² + 10²
l² = 676
l = 26

curved surface area = πrl
                                   = 22/7 × 10 × 26
                                   = 816.8 cm²
total surface area = curved surface area + πr²
                               = 816.8 + 314.2
                               = 1131 cm² 

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