the volume of a box varies jointly as its length, width and height. What happens to the volume of the box if its length and width are doubled but its height remains the same?

a.) The volume doubles
b.) The volume quadruples
c.) The volume remains the same
d.) The volume becomes eight times as great

Question

the volume of a box varies jointly as its length, width and height. What happens to the volume of the box if its length and width are doubled but its height remains the same?

a.) The volume doubles
b.) The volume quadruples
c.) The volume remains the same
d.) The volume becomes eight times as great

anonymous · Answer

formula for volume of box is V = lwh where l = length; w = width; h = height

if l and w are doubled but h remains the same, you get

V = (2l) * (2w) * h

simplify that and you'll get your answer

anonymous · Answer

but how to simplify it when you multiply the length , width and height?.....
sorry I don't know the answer.... please help