1.

Find T.S.A. of a cone of its slant height is 21 m and diameter iof the base is 24 cm​

Answer»

ANSWER:

hey mate

Step-by-step explanation:

TOTAL SURFACE AREA of a cone

= πr(r+l)

= π(12)(12+21)

= 12π(33)

= 396π

= 396(3.14)

= 1243.44

Hence, the answer is 1243.44m²



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