First, find the area of the original poster:
Area = length x width
Area = 72 cm x 15 cm
Area = 1080 cm²
Next, find the new dimensions of the poster after being reduced:
New length = 72 cm - 6 cm = 66 cm
New width = 15 cm - 3 cm = 12 cm
Finally, find the area of the new poster:
Area = new length x new width
Area = 66 cm x 12 cm
Area = 792 cm²
Therefore, the area of the new poster is 792 cm².
Area and Volume Unit Test
A rectangular poster has a length of 72 centimeters and a width of 15 centimeters. The poster is reduced in size by 6 centimeters in length and 3 centimeters in width. What is the area of the new poster?
1 answer