(5.2 x 10^-2) x (8.0 x 10^4) in scientific notation?

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.