A rectangle has a length three times its width and its perimeter is less than 25cm find the dimensions of the rectangle if the maximum area is 30. Show your solutions
Share
A rectangle has a length three times its width and its perimeter is less than 25cm find the dimensions of the rectangle if the maximum area is 30. Show your solutions
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
width is 3 cm
length is 9cm
Step-by-step explanation:
let x be the width
x - width
3x - length
trial and error
let's say the perimeter is 24.
Perimeter = 2L + 2W
Perimeter = 2(3x) + 2(x)
width is 3 cm
length is 9cm
Perimeter = 2(9) + 2(3)
Perimeter = 18 + 6
Perimeter = 24 cm
24 is less than 25
Area = L x W
Area = 9 x 3
Area = 27 cm^2
27 is less than 30
You can try another number too.
I hope it helps.