The radius and height of a right cone are in the
ratio 3:4. Then the ratio of total surface area to
curved surface of the cone is
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1
Answer:
cone ⇒ radius : height
4 : 3
Let 4x : 3x
∴ curved surface area of cone
⇒πrl
r = radius
l = slant height
l=h2+r2−−−−−−√
=(4x)2+(3x)2−−−−−−−−−−−√=5x
∴ Curved surface area
⇒πrl+πr2
⇒πr(l+r)
⇒π×4x(5x+4x)
π×4x×9x
⇒36πx2
∴ Curved : Total area
20πx2 : 36πx2
5 : 9
Step-by-step explanation:
Answered by
0
Answer:
bro that was the right question.....
in hindiii
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