Ada yg tau nmr 3 caranya gimana? please help me.... Question from @Unti

October 2018 2 14 Report

Ada yg tau nmr 3 caranya gimana? please help me

Avicennaa Luas yg diarsir = luas juring OB - luas juring OA
= $\frac{72}{360}$ x 3,14x26x26 - $\frac{72}{360}$ x 3,14 x 24 x 24
= 424,528 - 361,728
= 62,8

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rianur41 Luas juring besar = sudut pusat x πr $^{2}$
360 $^{0}$

= 72 x 3,14 x 26 x 26
360

= 152830 = 424,52
360

luas juring kecil = sudut pusat x π $r^{2}$
360

= 72 x 3,14 x 24 x 24
360

= 130222,08 =361,728
360

luas daerah yg di arsir = 424,52 - 361,728= 62,7

semoga membantu :)

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Unti thank you soooo much

rianur41 ok sama sama

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