diketahui AP = 4x cm

Diket :
AB = x + 1
AP = 4x
K = (8x + 2)π

K = πd
(8x + 2)π = πd
d = 8x + 2

r = [tex] \frac{1}{2} [/tex]d
r = [tex] \frac{1}{2} [/tex](8x + 2)
r = 4x + 1
[a]


AB = √((BP)² - (AP)²)
*BP adalah jari-jari*
AB = √((4x+1)² - (4x)²)
AB = √(16x² + 8x + 1 - 16x²)
AB = √(8x + 1)
[b]