jawaban:
diameter = 2 × jari-jari
jari-jari(r) = d/2
r = 14/2
r = 7cm
maka,
Luas Kolam 1
= π × r²
= 22/7 × 7²
= 22/7 × 49
= 22 × (49:7)
= 22 × 7
= 154cm²
Luas Kolam 2
Luas Taman di luar kolam
= luas kolam 1 - luas kolam 2
= 154cm² - 38,5cm²
= 115,5cm²
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= × 7²
= 22 × 7
= 154 cm²
= π × r²
= ×
= 5,5 × 7
= 38,5 cm²
L = -
L = 154 - 38,5
L = 115,5 cm²
jawaban:
diameter = 2 × jari-jari
jari-jari(r) = d/2
r = 14/2
r = 7cm
maka,
Luas Kolam 1
= π × r²
= 22/7 × 7²
= 22/7 × 49
= 22 × (49:7)
= 22 × 7
= 154cm²
Luas Kolam 2
Luas Taman di luar kolam
= luas kolam 1 - luas kolam 2
= 154cm² - 38,5cm²
= 115,5cm²
semoga membantu