tolong dibantu ya, pakai cara
Mencari b
[tex] \frac{b}{10} = \frac{4}{10} [/tex]
10b = 4.10
10b = 40
b = 4 cm
Mencari a
[tex] \frac{4}{6} = \frac{a}{9} [/tex]
4.9 = 6a
36 = 6a
a = 6 cm
Mencari d
[tex]10 = \frac{(9 \times d) + (5 \times 4)}{9 + 5} \\ 10 = \frac{9d + 20}{14} [/tex]
10.14 = 9d + 20
140 = 9d + 20
140 - 20 = 9d
120 = 9d
d = 13,3 cm
Mencari c
[tex]10 = \frac{(6 \times 13.3) + (c \times 4)}{6 + c} \\ 10 = \frac{79.8 + 4c}{6 + c} [/tex]
10( 6 + c ) = 79,8 + 4c
60 + 10c = 79,8 + 4c
10c - 4c = 79,8 - 60
6c = 19,8
c = 3,3 cm
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