bantu jawab no.32&33 ya yg bisa. makasih

32.
Keliling ∆ = 17+10+21 = 48 cm
s = 48/2 = 24 cm
Luas ∆ = √24(24-21)(24-17)(24-10)
= √24(3)(7)(14)
= √ 7.056 = 84 cm²

R = (21 x 17 x 10)/(4 x 84) = 170/16 = 10,625
d = 21,25 cm
K = πd = 21,25 π cm

33.
K = 3+4+5 = 12 cm
Luas = 3x4/2 = 6 cm²

r = 2x6/12 = 1 cm