Four identical square are cut from the corners of the rectangular sheet of cardboard shown. This sheet is then folded along the dotted lines and taped to make a box with an open top. The base of the box measures 5 cm by 4 cm. The volume of the box is 60 cm3. What was the area of the original sheet of cardboard?
Answers & Comments
hope it helps you......
Answer:
This questions is hard and has a main role of visualizing it so try to visualize it. Answer is 110
Step-by-step explanation:
Volume given = 60cm^3
l = 5cm, b = 4cm
To find h,
lbh = volume
5x4xh = 60
h=60/20
h=3cm
Now let's try to find the actual length of the Original cardboard:
Length of the cut square = h (Try to imagine that when the box will be opened the h will become side of the cut square)
so, the length of card board = 3+3+5 = 11
l=11cm.
Same as previous, breadth will be:
breadth = 3+3+4
b=10cm.
Now the area of the original cardboard:
lxb = 11x10 = 110
Hope it helped =)