C is the correct answer because triangles always equal to 180 degrees
The answer is C. P=h + 11
Answer:
38.1%
Step-by-step explanation:
Increase = 29 - 21 = 8
Increase % = increase/original x 100
= 8/21 x 100
= 0.381 x 100
= 38.1%
“Per cent” means “for each 100,” so 81% means “81 for each 100,” which translates to 81/100 as a fraction. 81 and 100 are what are called *coprime*, which means they don’t share any factors, so we can’t reduce the fraction any more.