chicimulida
1. luas = alas x tinggi : 2 =10 x 4 : 2 = 40 : 2 = 20 cm 2. luas = panjang x lebar 48 = 12 x L 48 = 12L 12L = 48 L = 48 : 12 L = 4 cm 3. luas = 1 x jmlh sisi sejajar x tinggi 2 = 1 x (7+12) x 5 2 = 1 x 19 x 5 2 = 1 x 95 2 = 47,5 cm 4. luas = (4 x 14) + (6 x 6) = 56 + 36 = 92 cm 5. luas = (6 x 5 : 2) + (6 x 6) = 15 + 36 = 51 cm 6.luas = (4 x 2) + (2 x 2) = 8 + 4 = 12 cm 7. luas = X jari-jari x jari-jari = x 7 x 7 = 154 cm 8. luas = x jari-jari x jari-jari = 3,14 x 5 X 5 = 78,5 cm diameter 10 berarti jari2 5. jari2 setengah dari diameter 9. luas = ( ) + (8 x 2) = 1,57 + 16 = 17,57 cm 10. volume = 20 x 7 = 140 cm moga2 bener semua ya...
=10 x 4 : 2
= 40 : 2
= 20 cm
2. luas = panjang x lebar
48 = 12 x L
48 = 12L
12L = 48
L = 48 : 12
L = 4 cm
3. luas = 1 x jmlh sisi sejajar x tinggi
2
= 1 x (7+12) x 5
2
= 1 x 19 x 5
2
= 1 x 95
2
= 47,5 cm
4. luas = (4 x 14) + (6 x 6)
= 56 + 36
= 92 cm
5. luas = (6 x 5 : 2) + (6 x 6)
= 15 + 36
= 51 cm
6.luas = (4 x 2) + (2 x 2)
= 8 + 4
= 12 cm
7. luas = X jari-jari x jari-jari
= x 7 x 7
= 154 cm
8. luas = x jari-jari x jari-jari
= 3,14 x 5 X 5
= 78,5 cm
diameter 10 berarti jari2 5. jari2 setengah dari diameter
9. luas = ( ) + (8 x 2)
= 1,57 + 16
= 17,57 cm
10. volume = 20 x 7
= 140 cm
moga2 bener semua ya...