Question

158. HANYA BUAT YG MERASA JENIUS. JAWAB LENGKAP PAKAI CARA. GRATIS JAWABAN TERCERDAS

Answer 1

Luas kolam = luas lingkaran = 38.5 m2

rumus Luas lingkaran

= πr^2

= 22/7 x r^2 = 38.5 m2

= r^2 = 12.25 m2

= r = 3.5 m

Panjang pagar= keliling lingkaran

rumus keliling = 2πr

= 2 x 22/7 x 3.5

= 22 m

Answer 2

L = 38,5 m^2

L = phi × r^2

38,5 = 22/7 × r^2

r^2 = 38,5 : 22/7

r^2 = 38,5 × 7/22

r^2 = 12,25

r = V12,25

r = 3,5 m

Panjang pagar

= 2 × phi × r

= 2 × 22/7 × 3,5

= 22 m (B)

20]

C. II dan III