B= 30
a2+b2=c2
72^2+b^2 = 78^2
5184+b^2 = 6084
b2 = 900
b = 30
I believe your answer is 25.12
Π=3.14
Let's start with two digits:
3.14 = 3 14/100
= 3 7/50
= 157/50
would be the approximation for that. Let's add a few more digits:
3.1415 = 3 1415/10000
= 3 283/2000
= 6283/2000
basically your just combining like terms then multiplying to get
-2p^5+5q
