Question

Please help with this math problem

Answer 1

`If\ F_2\sim F_1,\ then\\\\(P_(F_2))/(P_(F_1))=scale\ and\ (A_(F_2))/(A_(F_1))=k^2\\\\P_(F_1)=20\ cm\\\\P_(F_2)=28\ cm\\\\k=(28)/(20)=(7)/(5)\\\\A_(F_1)=18.6\ cm^2\\\\(A_(F_2))/(18.6)=\left((7)/(5)\right)^2\\\\(A_(F_2))/(18.6)=(49)/(25)\\\\(A_(F_2))/(18.6)=1.96\ \ \ \ |\cdot18.6\\\\A_(F_2)=36.456\ cm^2`