SOLUTION: Mary wants to make a box. She starts with a piece of cardboard whose length is 15 centimeters and width is 10 centimeters. Then she cuts 4 congruent squares with sides of 3 centim

Algebra ->  Volume -> SOLUTION: Mary wants to make a box. She starts with a piece of cardboard whose length is 15 centimeters and width is 10 centimeters. Then she cuts 4 congruent squares with sides of 3 centim      Log On


   

Question 1034270: Mary wants to make a box. She starts with a piece of cardboard whose length is 15 centimeters and width is 10 centimeters. Then she cuts 4 congruent squares with sides of 3 centimeters at the four corners and folded at the broken lines to make the box. What is the volume of the box?
Found 2 solutions by josmiceli, addingup:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract +3+ cm from each end of length
+15+-+2%2A3+=+9+ cm
Subtract +3+ cm from each end of width
+10+-+2%2A3+=+4+ cm
The height will be +3+ cm after the sides
are folded up
----------------
+9%2A4%2A3+=+108+
The volume is 108 cm3

Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
15-3-3 = 9 is the length of the box
10-3-3 = 4 is the width of the box
And the walls are 3 high
Area = Length*Width*Height
Area = 9*4*3 = 108 cm^3
John