Find perimeter of rectangle whose length is 40cm and a diagonal is 41 cm with work pls :)

Question

asked Jan 22, 2022 161k views

2 Answers

SeanW · Answer 1 · 2022-01-25T14:15:00+0000

The width w = sr(41^2 - 40^2) using Pythagoras. [It is a 9, 40, 41 Pythagorean triple!]
So w = 9cm
Perimeter = 2(length + width) = 2(9 + 40) = 98cm

Joesan · Answer 2 · 2022-01-26T17:58:34+0000

Find perimeter of rectangle whose length is 40cm and a diagonal is 41 cm.

The formula in finding the perimeter of rectangle is
$\tt P = 2(l + w)$

Therefore, the perimeter of rectangle is 162cm