Answer:
<h2> P = 98 cm</h2>
Step-by-step explanation:
Given one side and diagonal of rectangle we can use Pythagorean theorem to calculate the other side of it.

Perimeter:
P = 2W + 2L = 2•40 + 2•9 = 80 + 18 = 98
Answer:
3/6 or 1/2.........................
The answer would be -18/-7
Is the average<span> of the numbers: a calculated "central" value of a set of numbers. To calculate: Just add up all the numbers, then divide by how many numbers there are.</span>