Mata Pelajaran : Matematika
78 = 2 (× 2r × 2r) + ( x r²)
78 = 4r² + r²
78 = r²
r² = 78 ×
r² = 14
r = √14 Cm
Luas Lingkaran = ㅠr²
= (√14)²
= x 14
= 44 Cm²
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Mata Pelajaran : Matematika
78 = 2 (× 2r × 2r) + ( x r²)
78 = 4r² + r²
78 = r²
r² = 78 ×
r² = 14
r = √14 Cm
Luas Lingkaran = ㅠr²
= (√14)²
= x 14
= 44 Cm²