The total surface area of a right square prism is 420 square centimetres, the area on each side centimetres. of the base is 100 square centimetres and its height is? If anyone knows please let me know I need an answer how to calculate.​

Height is 5.5 cm²

Step-by-step explanation:

We already know the area of the bases. Subtract the area of the bases from the surface area.

100 x 2  = 200 (there are two bases)

420 - 200 = 220

That leaves us with 4 sides. Divide 220 by 4 to find the surface area of one side.

220 ÷ 4 = 55

We already know the length of the side is 10, so divide 55 by 10 to find the height.

55 ÷ 10 = 5.5

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.