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a² = b² + c²
a² = 48² + 14²
a² = 2304 + 196
a = √2500
a = 50
s = a + b + c
2
s = 48 + 14 + 50
2
s = 56 cm
Lsegitiga = a × t
2
Luas = 14 × 48
2
Luas = 336
maka
a. rDalam = a × b ×c
4 × Luas segitiga
r = 14 × 48 × 50
4 × 336
r = 33600
1344
r = 25 cm
L = π × r²
L = 3,14 × 25²
L = 1962,5 cm²
b. RLuar = L
s
R = 336
56
R = 6 cm
D = 12 cm
K = π × d
K = 3,14 × 12
K = 37,68 cm