What is the TSA of a cone having radius rby 2 and slant height 2l
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Answer:
44rl + 11 r² / 14
Step-by-step explanation:
Tsa of cone = pi × r (l + r)
= 22/7 × r/2 × (2l + r/2)
= 22/7 × r/2 × (4l + r)/2
= 22 r (4l + r) / 28
= 11 r (4l + r) / 14
= 44rl + 11r² / 14
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