Calculate the slant height for the given cone. Round to the nearest tenth.

(explain?)
10.2 cm
11.4 cm
9.8 cm
12.0 cm

Question

Calculate the slant height for the given cone. Round to the nearest tenth.

 (explain?)
10.2 cm
11.4 cm
9.8 cm
12.0 cm

anonymous · Answer

attachment

anonymous · Answer

you have to use the formula a^2+b^2=c^2

anonymous · Answer

a and b are your sides and c is the hypotenuse
this only work with right triangles

anonymous · Answer

so if you look at the highlighted area your slant height will be your hypotenuse...your given one of your sides which is the height of the triangle. the diameter is your other side but you dont use the full diameter you have to cut it in half to fit your triangle. Now you simply plug them into the equation and solve for your hypotenuse (c)

campbell_st · Answer

halve the diameter to get the radius.... 

so radius = 4cm 

now apply pythagoras' theorem 

$$sh^2 = 9^2 + 4^2$$

just finish it off

campbell_st · Answer

the triangle looks like

|dw:1395034233422:dw|

anonymous · Answer

@nikato is my answer 9.8 right?

nikato · Answer

Yes. About that. 9.8

anonymous · Answer

okay thank you! (: