find the tin sheet required to prepare a conical box of radius 7 cm and height 13 cm and also find the total cost if rate of manufacturing is rupees 15 per cm²
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Answer:
TSA=394.99=395(approx.)
Cost=₹5925(approx.)
Step By Step Explanation:
π=22/7
r=7cm
h=13cm
l=√120
={l^2+r^2=h^2}
={l^2=13^2-7^2}
={l=√120}
According to Question
TSA OF BOX =πr(l+r)
=22/7×7×(√120+7)
=22×(√120+7)
=394.99
=395 (approx.)
Cost Of Box=395×15
=₹5925 (approx.)
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