Answer:
$64
Step-by-step explanation:
To find how much Robert paid, multiply 80 by 0.8
80(0.8)
= 64
So, Robert paid $64
I hope it is correct.. :)
A = 2πr + πrl
A - 2πr = 2πr + πrl - 2πr (subtracting both sides by 2πr)
A - 2πr = πrl
(dividing both sides with πr)
(splitting LHS)
happy to help :)
2^x +5=69
2^x =69-5
2^x =64
2^x =2^6
x =6