Jawaban:
LUAS
R = 21cm
rumus π × r²
22/7 × 21 × 21
22 × 3 × 21
1.386cm ÷ 4 = 346,5cm
jadi
1.386 - 346,5 = 1.039,5cm
persegi
S²
21cm × 21cm = 441cm
hasil
1.039 + 441 = 1.480cm
KELILING
R = 21 × 2 = D 42cm
rumus π × d
22/7 ×42
22 × 6
132cm ÷ 4 = 33cm
132 - 33 = 99cm
99 + 441 = 540cm
Penjelasan dengan langkah-langkah:
jadikan jawaban terbaik
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Jawaban:
LUAS
R = 21cm
rumus π × r²
22/7 × 21 × 21
22 × 3 × 21
1.386cm ÷ 4 = 346,5cm
jadi
1.386 - 346,5 = 1.039,5cm
persegi
S²
21cm × 21cm = 441cm
hasil
1.039 + 441 = 1.480cm
KELILING
R = 21 × 2 = D 42cm
rumus π × d
22/7 ×42
22 × 6
132cm ÷ 4 = 33cm
132 - 33 = 99cm
persegi
21cm × 21cm = 441cm
hasil
99 + 441 = 540cm
Penjelasan dengan langkah-langkah:
jadikan jawaban terbaik