no.10 tolong pake cara makasih
Matematika
student109
Pertanyaan
no.10 tolong pake cara makasih
1 Jawaban
-
1. Jawaban zakipelajar
L=22/7×r^2
1,54 dm^2 = 22/7 × r^2
154 cm^2 = 22/7 × r^2
154 × 7/22 = r^2
49 = r^2
7 = r
r=7 cm
D=2r=2(7)=14 cm