Question

Note: This is manually
16
If the area of a rectangle is 1260 cm2 and its perimeter 145cm, what is the length of a diagonal?
45 cm
044 cm
28 cm​

Answer 1

Answer:

the answer of the question is 45

Answer 2

The length of a diagonal

d=1/2 √(P^2﹣8A)

here p = 145cm , A = 1260 cm2

put the value we get

d=1/2 √{(145)^2﹣8×(1260)}

=> d = 52.30918cm

=> d ≈ 52.31 cm

so,

the length of a diagonal is 52.31cm