The surface area of a cube is 216in.² what is the volume of a cube

216 in^3

Step-by-step explanation:

Length=L

Surface area=216

surface area=6 x L^2

216=6xL^2

Divide both sides by 6

216/6=(6xL^2)/6

36=L^2

L^2=36

Take the square root of both sides

√(L^2)=√(36)

L=6

Volume of cube=L x L x L

volume of cube=6 x 6 x 6

Volume of cube=216

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!