niesrinaasmadina
4.busur AB = 75/360 x πd
=75/360 x 22/7 x 28
=75/360 x 88
=5/24 x 88
=18 1/3 cm
jawab.C
5.busur BC = 150/40 x 32
=15/4 x 32
= 15 x 8
=120 cm²
jawab.A
6.L persegi = s² = 14² =196 cm²
L 2 x 1/4 lingkaran = L 1/2 lingkaran
=1/2 x πr²
= 1/2 x 22/7 x 7²
=1/2 x 22x7
=77 cm²
luas arsir =196-77 =119 cm²
jawab.C
Verified answer
3.L juring = 90/360 x πr²=1/4x 3,14 x 100
=1/4 x 314
=78,5 cm²
L segitiga =1/2 at
=1/2 x 10 x 10
=50 cm²
L tembereng = 78,5 -50 =28,5 cm²
jawab.A