the height of a cone is 20 cm and radius of its base is 15 cm find the TSA of cone
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Answer:
1885.7142 cm²
Step-by-step explanation:
TSA= πr²+πrl
l=√h²+r²
l=√20²+15²
l=√400+225=√625
l=25
πrl=(22/7)×15×25
=1178.5714
πr²=(22/7)×15×15
=707.1428
TSA:. 707.1428+1178.5714
=1885.7142 cm²
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