Question

Completely bemused, do not know how to get the answer.
a)8π
b)7√2
c)27√π
d)7√×7√×1

13- Determine the exact total surface area of a sphere with radius 2√2 metres.

a) An inverted cone with side length 4 metres is placed on top of the sphere so that the centre of its base is 0.5 metres above the centre of the sphere.

b) Find the radius of the cone exactly.

c) Find the area of the curved surface of the cone exactly.

d) What are the exact dimensions of a box that could precisely fit the cone connected to the sphere?

Answer 1

And I am equally bemused by your comment.
What do you mean by "the answer" ?
You have simply written down 4 numbers.
What about them ?

13.
SA of sphere is 4πr^2
= 4π(2√2)^2
= 32π m^2

Still trying to visualize your cone somehow wobbling on top of , or hovering over the sphere.
Does the cone have the same radius as the sphere?

Answer 2

The first 4 numbers are the answers