Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest tenth. (1 point)
439.6 ft2
324.5 ft2
571.5 ft2
285.7 ft2
2. Find the surface area of a square pyramid with a base length of 24 cm and a height of 16 cm. (1 point)
1056 cm2
1536 cm2
816 cm2
1344 cm2

Question

Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest tenth.  (1 point)
439.6 ft2
324.5 ft2
571.5 ft2
285.7 ft2
2.   Find the surface area of a square pyramid with a base length of 24 cm and a height of 16 cm.  (1 point)
1056 cm2
1536 cm2
816 cm2
1344 cm2

anonymous · Answer

please help!

anonymous · Answer

@TuringTest you think you can help me?(:

turingtest · Answer

what is this a test on?

anonymous · Answer

its not a test, its a questions on a worsheet for volume and radius.

turingtest · Answer

good, in that case I  can tell you that the formula for a cone is $$\frac13\pi r^2h$$where h  is the vertical height of the cone. you only are given the slant height and radius, but you can get the vertical height from the pythagorean theorem

turingtest · Answer

formula for the *Volume* of a cone...
anyhow, you can get the height h like so....|dw:1362428113518:dw|

turingtest · Answer

r^2+h^2=x^2
solve for h, plug that into the formula for the volume of a cone

anonymous · Answer

alright, |dw:1362428170670:dw| im a very confused person right now