Bantuin dong ? Pake Rumus ya

A= 7 cm, U5= 2,24 m/224 cm

Cari rasionya =
U6/U1= 224/7
r^5 = 32
r = 2

S6 = a(r^6 - 1)/r-1
=7(2^6 - 1)/2-1
=7(64-1)
=7(63)
=441 cm

Maaf kalo salah.
Semoga membantu

a = 7 cm
S6 = 2,24 m = 224 cm
Sn = a × r^(n-1)
S6 = 7 × r^(6-1) = 224
r^5 = 224 / 7
r^5 = 32
r^5 = 2^5
jadi r = 2
Dn = a × (r^n - 1) / (r - 1)
D6 = 7 × (2^6 -1) / (2 - 1)
= 7 × (64 - 1) / 1
= 7 × 63
=441
Jadi panjang tali seluruhnya 441 cm (B)