Answer:You cannot take the square root of a negative number
Step-by-step explanation:
The perimeter is the distance all the way around.
That's the sum of all the sides.
A triangle has 3 sides.
In an equilateral triangle, they're all the same length.
If one of them is 9.9 cm, then all of them add up to (3) · (9.9 cm) .
Answer:
Complementary angels= 90⁰
90-79= 11
11⁰
