It should be 13.8. hope this helps
For any square the area is given by

where

is the length of one side. (This comes from the general rectangle formula

with

).
To solve for

we take the square root of both sides:



Now we can substitute known values:


Answer:
A. 1
Step-by-step explanation:
|p-3| is the absolute value of p-3 which is always positive
p-3 = 4- 3 = 1
and |1| = 1
Answer:
a = √11 and b = 6
Step-by-step explanation:
Refer to attached picture for reference
for an right triangle with angle θ
we are given
cos θ = 5/6 = length of adjacent side / length of hypotenuse
hence
adjacent length = 5 units
hypotenuse length = 6 units
the missing side is the "opposite" length which we can find with the Pythagorean equation. in our case:
hypotenuse ² = adjacent ² + opposite² (rearrange)
opposite ² = hypotenuse ² - adjacent ²
opposite ² = 6² - 5²
opposite = √ (6²-5²) = √11
sin θ = opposite length / hypotenuse (substitute values above)
sin θ = √11 / 6
hence a = √11 and b = 6