Matematika B. Dik=R=32 cm Dit=L.lingkaran Jwb=? C. Dik=D=35 cm Dit=L.lingkaran Jwb=? D. Dik=D=48 cm Dit=L.lingkaran Jwb=?

gudrunkunzeulv – June 10, 2023

B. Dik=R=32 cm

Dit=L.lingkaran

Jwb=?

C. Dik=D=35 cm

Dit=L.lingkaran

Jwb=?

D. Dik=D=48 cm

Dit=L.lingkaran

Jwb=?

Jawaban:

b.) 3.215,36 cm²

c.) 962,5 cm²

d.) 1.808,64 cm²

Penjelasan dengan langkah-langkah:

b.) L = π × r²

= 3,14 × 32 × 32

= 3,14 × 1.024

= 3.215,36 cm²

c.) L = 1/4 × π × d²

= 1/4 × 22/7 × 35 × 35

= 22/28 × 35 × 35

= 22/28 × 1.225

= 22/4 × 175

= 3.850/4

= 962,5 cm²

d.) L = 1/4 × π × d²

= 1/4 × 3,14 × 48 × 48

= 1/4 × 3,14 × 2.304

= 1/4 × 7.234,56

= 7.234,56/4

= 1.808,64 cm²

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