Question

Please can someone help?

Answer 1

Answer:

The answer is 40cm

Step-by-step explanation:

hope this helps :)

Answer 2

Answer:

40

Step-by-step explanation:

Side of square = x

Long side of rectangle = x + 5

Short side of rectangle = x - 3

(x - 3)(x + 5) = 84

$x^2+2x-15=84$

x = 9, x = -11

X has to be 9 because x cannot be negative.

9 + 5 = 14

9 - 3 = 6

14 + 14 + 6 + 6 = 40