2+2=4 x 20=80 I hope this is what you were looking for
Answer:
o-
Step-by-step explanation:
Answer: r = - 20
Step-by-step explanation:





Answer:
16 × π in 2
Step-by-step explanation:
the formula to find the area of a triangle is πr^2, you are given the diameter which equals 2r. so split the diameter in half and plug your number in. π4^2
4^2=16
16xπ