Question

Find the area of the iron sheet required to prepare a cone is 24 cm height with base radius 7 cm

Answer 1

total area to make the cone =πrl +πr²

here, height =24cm

base radius =7cm

so we have,

slant height l=√h²+r²

l=√24²+7²

√576+49

√625

25 cm

so here slant height, l=25cm

puting the value in formula we have,

22/7×7×25+22/7×7×7

22×25+22×7

550+154

704cm²answer

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