Slide 8 - Personal Ftsl Itb Ac Id
Slide 8 - Personal Ftsl Itb Ac Id
Slide 8 - Personal Ftsl Itb Ac Id
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cos q = OB/OC = 0,4 / 0,5 = 0,8<br />
q = cos -1 0,8 = 37 o<br />
luas ABCD<br />
R = A/P = ---------------busur<br />
ADC<br />
A B<br />
Luas ABCD = luas AOCD + luas AOC<br />
= ¼ p D 2 x 286 o /360 o + 2 x ½ x BC x OB<br />
= ¼ p D 2 x 286 o /360 o + 2 x ½ x ½Dsin 37 x ½Dcos 37<br />
= 0,744 D 2<br />
O<br />
D<br />
q<br />
C
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