Math, asked by teegalapriyanka45, 5 months ago

If the slant height of the cone is 21 cm and the diameter of the base is 24 cm . The total surface area of a cone is

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Answered by vainimoningi

Answer:

Step-by-step explanation:

TSA OF A CONE= πr(l + r)

=314/100 *12*(21 + 12)

=124344/100

=1223.44cm2

I usually take pi to be 3.14 when I’m not able to cancel the 22/7 completely rand then change it to 314/100. I find it easier to convert into decimals when the denominator is ten,hundred,thousand.....

hope it helps

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If the slant height of the cone is 21 cm and the diameter of the base is 24 cm . The total surface area of a cone is​

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If the slant height of the cone is 21 cm and the diameter of the base is 24 cm . The total surface area of a cone is