Question

the perimeter of a rectangle is 280 cm . the ratio of the side 4:3 . find its area and length of its diagnoals​

Answer 1

Answer:

so the sides are

4x=4*20=80cm

3x=3*20=60cm

Step-by-step explanation:

hope u understand it

pls mark brainliest

Answer 2

Step-by-step explanation:

let let the length and breath be 4x and 3x

perimeter= 280cm

2(l+b)=280

2(4x+3x)=280

2×7x= 280

14x = 280

x = 280/14

x= 20 cm

hence the length is 4x or 4×20= 80cm.

and breadth is 3x or 3×20= 60cm .

Area= length × breadth

80×60

4800 cm^2

and diagonal= √l^2+b^2

= √80^2+60^2

= √6400+3600

= √10000

= 100

hence the diagonal is 100cm.