Question

. The surface area of a cube is 18 3/8 m square. Find its volume.

Answer 1

V≈5.2
A Surface area

18
Unit Conversion:
Using the formulas
A=6a2
V=a3
Solving forV
V=6A3/2
36=6·183/2
36≈5.19615

Answer 2

Answer:

Step-by-step explanation:

Surface area of the cube = 18 3/4 m^2

=> 6a^2 = 18 3/8

=> 6a^2 = 147/8

=> a^2 = 147/8 x 6

=> a^2 = 147/48

=> a^2 = 49/16 (on solving the fraction)

=> a = root(49/16)

=> a = 7/4 m

Now , volume of cube = a^3

                                     = (7/4)^3 m^3

                                     = 543/64 m^3