The first one is 8 and the second one is 6
Answer:
Perimeter = 180
Area = 1080
Step-by-step explanation:
Perimeter is length of all sides added together. 30+78+72 = 180
Area is the length times the height/2 for a triangle. 30*72/2 = 1080
I hope this helped <3
The answer is to this question is option B
X^2-81=x^2-9^2=(x+9)(x-9)
this is the answer
Commutative Property of Addition
