Mary wants to make a box. She starts with a piece of cardboard whose length is 15 centimeters and with is 10 centimeters. Then she cuts congruent squares with side of 3 centimeters at the four corners. What is the area of the cardboard after she cuts the 4 corners?
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Step-by-step explanation:
length= 15cm
width=10cm
Area of cardboard= length× width
= 15×10
= 150 cm^2
side of square= 3 cm
Area of square= (side)^2
= 3×3
= 9 cm^2
for four square area Will be
= 9×4
=36 cm^2
Area of cardboard after cutting= 150 - 36
= 114 cm^2
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