Sebuah waduk berbentuk lingkaran dengan luas 70.650m2,akan ditanami pohon ditepinya hitunglah! a.diameter waduk b.keliling waduk c.banyak pohon yang ditanam, jika jarak antar pohon 6m
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Luas = phi x r^2 3,14 x r^2 = 70.650 r^2 = 70.650 : 3,14 = 22500 r = V22500 = 150 m
a) diameter = 2 x 150 = 300 m
b) keliling = phi x d = 3,14 x 300 = 942 m
c) banyak pohon = 942 : 6 = 157
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beedavid
A. luas = πr² 70650m² = 3,14r² = r² r² = 22500m² r = √22500m² r = 150m
diameter = 2×r diameter = 2×150m diameter = 300m
b. keliling = 2πr keliling = 2·3,14·150m keliling = 942m
c. banyak pohon = banyak pohon = banyak pohon = 157 pohon
3,14 x r^2 = 70.650
r^2 = 70.650 : 3,14
= 22500
r = V22500
= 150 m
a) diameter = 2 x 150 = 300 m
b) keliling = phi x d
= 3,14 x 300
= 942 m
c) banyak pohon = 942 : 6
= 157
70650m² = 3,14r²
= r²
r² = 22500m²
r = √22500m²
r = 150m
diameter = 2×r
diameter = 2×150m
diameter = 300m
b. keliling = 2πr
keliling = 2·3,14·150m
keliling = 942m
c. banyak pohon =
banyak pohon =
banyak pohon = 157 pohon