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Nomor 21 Diketahui k = 132 cm Ditanya r = ..... Jawab r = k / pi r = 132 / 22/7 . = 132 × 7/22 r = 42 cm nomor 22 Diketahui r = 21 cm Ditanya L = .... Jawab L = pi × r × r L = 22/7 × 21 × 21 . = 66 × 21 L = 1386 cm2 nomor 25 Diketahui d = 14 cm Ditanya 2x k = .... Jawab k = d × pi × 2 k = 14 × 22/7 × 2 . = 44 × 2 k = 88 cm maaf kalo salah
Diketahui
k = 132 cm
Ditanya
r = .....
Jawab
r = k / pi
r = 132 / 22/7
. = 132 × 7/22
r = 42 cm
nomor 22
Diketahui
r = 21 cm
Ditanya
L = ....
Jawab
L = pi × r × r
L = 22/7 × 21 × 21
. = 66 × 21
L = 1386 cm2
nomor 25
Diketahui
d = 14 cm
Ditanya
2x k = ....
Jawab
k = d × pi × 2
k = 14 × 22/7 × 2
. = 44 × 2
k = 88 cm
maaf kalo salah