Answer:
12.5 x 10^12
Step-by-step explanation:
12,500,000,000,000
12 zeroes following 12.5
Answer:
t'
f
t
Step-by-step explanation:
Given problem;
A = 4 π R²
To solve for R, we have to make it the subject of the expression.
Since
A = 4 π R² , follow these steps to find R;
Multiply both sides by
A x
=
x 4 π R²
= R²
Then find the square root of both sides
√R² =
R = 
The solution is 
500 adult tickets and 350 children tickets.
Check :
500A($1.5)=$750
350C($1)=$350
$750 + $350 = $1100 AND 500 + 350 = 850 tickets