Question

Find the perimeter of triangle whose length is 40 cm and diagonal is

Answer 1

Answer:

120cm

Step-by-step explanation:

perimeter of triangle=side×3

x=40×3

x=120

Answer 2

Answer :-

Given that length of the side of the rectangle is 1 = 40cm

the length of the diagonal is d = 41 cm

let breadth be bcm

$therefore \: \: 1 {}^{2} + b {}^{2} = d {}^{2}$

$= b {}^{2} = 81$

$= b = 9cm$

we know that the perimeter of the rectangle is

$2(1 + b) = 2(40 + 9) = 98cm$

______________________________