Question

Bantu no 1-5 dengan cara!

Answer 1

1. LK² = KN (KM)
15² = x (x+ 20)
x² + 20 x= 225
(x+10)² = 225 +100 = 325
 x + 10 = √325
x = -10 + √325
x = -10 +18,02
x = 8,02

2. LN² = KN (NM)
y² = x(20)
y² = 8,02 (20) = 160,4
y = √160,4 = 12,66

3. LM² = MN (MK)
z² = 20(20+x)
z² =20(20+8,02)
z² = 20(28,02(
z² = 560,4
z=√560,4 = 23,67

4. DE/AC = BE /(BE+EC)
a/20 = 10/(10+15)
a = 20(10) / (25)
a = 200/25
a = 8

5. AD/CE = DB/BE
b/15 = 6/10
b  = 6(15)/(10)
b  = 90/10
b = 9
....