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R = abc / 4L
sisi-sisi segitiga
sisi² = sisi miring² - sisi diketahui²
sisi² = 35² -21²
sisi² = 1225 - 441
sisi² = 784
sisi = √784
sisi = 28
Luas segitiga = 28 × 21 / 2
=294
R = abc / 4L
= (28×21×35)/(4×294)
=20580/1176
=17,5
C
=784
=28
luas segitiga = 28x21/2 = 294
R = abc/4L
= ( 28x21x35 )/(4x294)
= 20580/1176
=C. 17,5