What is the length of the second side in a rectangle, given that the sum of the 2 opposite sides is 14 cm and the area of the rectangle is 21 cm²?
We have hundreds of course questions with personalized recommendations + Account 100% premium
What is the length of the second side in a rectangle, given that the sum of the 2 opposite sides is 14 cm and the area of the rectangle is 21 cm²?
As we know that the two opposite sides of the rectangle add up to 14 and that, in a rectangle, each pair of opposite sides are equal, we can calculate the size of each one as follows:
We will call the other two opposite sides and calculate the unknown variable as follows:
We will then divide both sides by 7 to get:
3
Look at the rectangle ABCD below.
Side AB is 6 cm long and side BC is 4 cm long.
What is the area of the rectangle?
Get unlimited access to all 18 Rectangles questions, detailed video solutions, and personalized progress tracking.
Unlimited Video Solutions
Step-by-step explanations for every problem
Progress Analytics
Track your mastery across all topics
Ad-Free Learning
Focus on math without distractions
No credit card required • Cancel anytime