ada yg bisa jawab nomor 7?

2/3 = x/p
3x = 2p
3(akar (p²-5²) )= 2p
9(p²-25) = 4p²
9p² - 9.25 = 4p²
5p² = 9.25
p² = 45
p= akar 45
p = akar 9 . akar 5
p = 3 akar 5

Jawaban : C