Posted by **Trissy** on Sunday, October 16, 2011 at 9:29am.

Two cones are similar in shape and the ratio of corresponding lengths is 3:5.

(a) if the radius of the smaller cone is 12cm, find the radius of the larger cone.

(b) if there is sufficient paint to paint 216 large cones, how many smaller cones can be painted with same amount of paint?

(c) If the same amount of paint covers 24 similar cones, what is the radius of one of these cones?

Question (a) is straight forward but I would really appreciate help with questions (b) and (c). My head is starting to hurt :-)

## Answer This Question

## Related Questions

- math - Two right circular cone, one upside down in the other. The two bases are ...
- Calculus - Given a right circular cone, you put an upside-down cone inside it so...
- geometry - Two cones are similar. The larger cone, R, has a volume of 1331 cubic...
- geometry - The diameter of two similar cones are in the ration 5 to 6. If the ...
- maths - Two spheres of radius 6 cm and 4cm are inscribed in a right circular ...
- Calculus: Optimization - I have no idea how to approach this problem, if someone...
- calculus inverted cone - A container in the shape of an inverted cone has ...
- 7th g-math - An ice-cream shop offers a small size cone and a large size cone. ...
- Math (help) - what is the length of the radius of the LARGER cone(the LARGER ...
- Geometry - "A cone has the radius of 24 and its volume is 1,920 what is the ...

More Related Questions