The present shown below is a cube. find the surface area of the present.

2400cm²

Step-by-step explanation:

The formula for surface area of a cube is 6a² where a is the length of one side of the cube.

Given a=20 cm the surface area of the cube is ;

6*20²= 6*400=2400cm²

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

1,589.63 in.^3

step-by-step explanation:

i hope this you : d