l0ngtuan
Luas juring = 60/360 x 22/7 x 30^2 =3300/7 luas segitiga sama sisi = s^2 /4 x akar 3 = 900akar3/4 luas tembereng = luas segitiga - luas segitiga
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khoirotunnisak
A. L.juring = 60/360 x l.lingkrn = 1/6 x (πr²) = 1/6 (22/7.30.30) = 471,42 b.L.ΔPOQ = 1/2 x a xt = 1/2 x 30 x 30= 450
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l0ngtuan
tingginya 30 ya? bukannya 15akar3 ? tnya aja :)
luas segitiga sama sisi = s^2 /4 x akar 3 = 900akar3/4
luas tembereng = luas segitiga - luas segitiga
= 1/6 x (πr²) = 1/6 (22/7.30.30) = 471,42
b.L.ΔPOQ = 1/2 x a xt = 1/2 x 30 x 30= 450