A community for students.
Here's the question you clicked on:
 0 viewing
jacalneaila
 2 years ago
the perimeter of a rectangle is 256 cm. if the sides are in the ratio 2:5. find the rectangle?.. with medal
jacalneaila
 2 years ago
the perimeter of a rectangle is 256 cm. if the sides are in the ratio 2:5. find the rectangle?.. with medal

This Question is Closed

ranga
 2 years ago
Best ResponseYou've already chosen the best response.1Let L be the length and W be the width of the rectangle. Perimeter = 2(L+W) = 256 divide both sides by 2 L + W = 128  (1) Sides are in the ratio 2:5 That means W/L = 2/5 cross multiply 5W = 2L divide both sides by 5 W = 2L/5  (2) Put W from equation (2) into (1) and solve for L. Then put the L value in (2) and solve for W.

jacalneaila
 2 years ago
Best ResponseYou've already chosen the best response.0can you explain it clearly

ranga
 2 years ago
Best ResponseYou've already chosen the best response.1Do you want to know how to solve or do you want to know how I got the 2 equations?

jacalneaila
 2 years ago
Best ResponseYou've already chosen the best response.0i want to know how to solve

ranga
 2 years ago
Best ResponseYou've already chosen the best response.1L + W = 128  (1) W = 2L/5  (2) Put W = 2L/5 in the first equation L + 2L/5 = 128 multiply each term by 5 to get rid of the fraction: 5L + 2L = 640 7L = 640 L = 640/7 = 91.43 cm Put this in (2) W = 2L/5 = 2*91.43/5 = 36.57 cm. L = 91.43 cm; W = 36.57 cm.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.