Question

Please solve it for me.​

Answer 1

Answer:

I think your answer opposition is (D) 60 cm.

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Hope it will helped you..

Answer 2

Answer:

50m

Step-by-step explanation:

Each side of the square = 160/4 m = 40 m.

2(l+b) = 160 => (l+b) = 80.

(40)^2-lb =100 => lb = (1600-100) = 1500.

( l - b)^2 = ( l + b)^2 - 4lb = ( 80)^2 - 4 × 1599

= (6400-6000) = 400 => l - b = 20.

Hence,

l + b = 80 , l - b = 20 => 2l = 100 => l = 50m.