Rebecca places plastic building cubes into a box shaped like a rectangular prism. Each cube has a volume of one cubic centimeter. She completely covers the bottom of the box with a layer of 25 cubes. If the height of the box is 3 centimeters, what is its volume?

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

b. x + 1

step-by-step explanation:

i'am smart