A rectangle is 3 times as long as it is wide, and its perimeter is 80 centimeters. Find its dimensions
1 answer:
Say the width is W and the length is L
L=3W (and of course W=W)
Now you use the perimeter formula P=2L+2W
80=2(3W) + 2W)
80=6W+2W
80=8W Divide both sides by 8
W=10
Now that you know the width, substitute it back into L=3W to find the length
L=3(10)
L=30
The dimensions are length: 30 cm and width: 10 cm
You might be interested in
Answer:
brackets
Step-by-step explanation:
Ya ave to use BIDMAS nd the B in BIDMAS stands for brackets
Answer:
Could you please show the circle ?
Step-by-step explanation:
It’s is the answer is c spring well
Answer:
y=-2x+14
Step-by-step explanation:
hope this can help
Bulletin boards can be in all shapes and sizes. There is no correct or incorrect answer to this problem.
