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2. garis singgung lingakaran dalam 18
maaf kalau salah
d²= p² - (R-r)²
36²= p² - (29-14)²
p²= 36²+15²
p²= 1296 + 225
p= √1521
p = 39 cm
2)
d²=p² - (R+r)²
d²= 25² -(12+5)²
d²= 625 - 289
d= √336
d= 18,33 cm