Tentukan panjang busur AB X luas juring AOB jika: a.jari jari:7cm sudut 90derajat b. jari jari 10cm sudut 72derajat c.jari jari 14cm sudut 60derajat d.jari jari 7cm sudut 30derajat e.jari jari 10cm sudut 36derajat
AnggraSetya
Rumus panjang busur : (besar sudut / 360 derajat ) x keliling lingkaran a) pnjang busur : (90/360) x 2x(22/7)x7 = 11 cm b) pnjang busur : (72/360) x 2x(3,14)x10 = 12,56 cm c) pnjng busur : (60/360)x2x(22/7)x14=14,65 cm d) pnjang busur ; (30/360) x 2x(22/7)x7= 3,66 cm e) panjang busur : (36/360) X 2 x(3,14)x10 = 6,28 cm
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auliaoktaviona
A. 1/4 x 22/7 x 14 = 22/2 = 11 cm b. 1/5 x 3,14 x 20 = 12,56 cm c. 1/6 x 22/7 x 28 = 44/3 = 14,65 cm d. 1/12 x 22/7 x 14 = 22/6 = 3,66 cm e. 1/10 x 3,14 x 20 = 6,28 cm maaf kalo salah
a) pnjang busur : (90/360) x 2x(22/7)x7 = 11 cm
b) pnjang busur : (72/360) x 2x(3,14)x10 = 12,56 cm
c) pnjng busur : (60/360)x2x(22/7)x14=14,65 cm
d) pnjang busur ; (30/360) x 2x(22/7)x7= 3,66 cm
e) panjang busur : (36/360) X 2 x(3,14)x10 = 6,28 cm
b. 1/5 x 3,14 x 20 = 12,56 cm
c. 1/6 x 22/7 x 28 = 44/3 = 14,65 cm
d. 1/12 x 22/7 x 14 = 22/6 = 3,66 cm
e. 1/10 x 3,14 x 20 = 6,28 cm
maaf kalo salah