Question 895480
F = 2A
F * A = 450
Substitute the known value of F from the first equation into the second
F * A = 450
(2A) * A = 450
Multiply
2{{{a^2}}}= 450
Divide each side by 2
{{{a^2}}}=225
Take the square root of each side
a = 15
If Angel is 15, then her father is twice that, or 30
15 * 30 = 450