Answer:
volume of cuboid = 2h(l+b)
Explanation:
since you are asking the method on how to do this I will just help you out with basic idea.
first,
convert mixed fractions into fractions before writing them in given.
eg:
GIiven,
width(b)= (7×2+1)/2 = 15/2= 7.5 in
then you can find out the length by doubling the width since the question has said the length is twice the width.
after that we can find out the height by subtracting (2×2+1)/2 = 5/2= 2.5 in from the length.
finally figure out the volume by using formula for volume of cuboid i.e 2h(l+b)