Question

Two right circular cones of equal curved surface areas have slant heights in the ratio of 3 : 5. Find the ratio of their radii.

(a) 4 : 1
(b) 3 : 5
(c) 5 : 3
(d) 4 : 5​

Answer 1

Answer:

4 1 it's help you

Step-by-step explanation:

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Answer 2

Answer:

c. 5:3

Step-by-step explanation:

$\pi$$r_{1}$$l_{1}$ = $\pi$$r_{2}$$l_{2}$

$l_{1}$:$l_{2}$ = 3:5

let l1 and l2 be 3x and 5x

$r_{1}$$l_{1}$ = $r_{2}$$l_{2}$

$r_{1}$*3x = $r_{2}$*5x

$r_{1}$/$r_{2}$ = 5x/3x

$r_{1}$/$r_{2}$ = 5/3

$r_{1}$ : $r_{2}$  = 5:3