The diagram shows three solids. The base radius of the cone is 6 cm and the slant height is 12 cm.

The radius of the sphere is x cm and the radius of the hemisphere is y cm.

The total surface area of each solid is the same.

(i) Show that the total surface area of the cone is 108r cm2

.

[The curved surface area, A, of a cone with radius r and slant height l is A r = r l.]

[2]

(ii) Find the value of x and the value of y.

[The surface area, A, of a sphere with radius r is A r 4

2 = r .]

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

i don't even know man. edge inuity be messing with us. i had to ask a question too.

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step-by-step explanation:

whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation: