Question

AREAS AND VOLUMES OF SIMILAR SOLIDS URGENT?

Answer 1

Similar cones have proportional dimensions:

`k=(3)/(2)`.

If the surface area of large cone is 75 sq. cm, then

`(SA_(large))/(SA_(small))= k^2,\\ (75)/(SA_(small))= ((3)/(2))^2=(9)/(4),\\ SA_(small)=(75\cdot 4)/(9) =33.333\approx 33.3` sq. cm.

Answer: 33.3 sq. cm.