Let's name the number 'n'. Now write an equation. 7*n +n^2 =12Now you can form a quadratic. n^2 +7n-12=0. Now you can use a myriad of methods to solve it. If you still need help, just message me.
Answer: 2450.44 ft
Step-by-step explanation:
Formula for SA of a cylinder: A=2*pi*r*h+2*pi*r^2
Formula for radius: diameter/2
Plug height, 17, radius, 13, and pi, 3.14, into the formula above.
= 2450.44 ft
To solve you divide 68 by 16 and that gives you the price per square foot so that is $4.25, Now times 12 by that and the answer will be $51 dollars.
1 400 000 000 000 000 000 000 km = 1.4 * 10^21 km
