| 1. |
B. In the given figure DEIIBC then find AD.A2cm6cm,4cm |
|
Answer» Answer is 3Because AD/DB=AE/ECAD/6=2/4AD=12/4AD=3 By Basic Proportionality Theroem- AD/DB = AE/EC putting the values given in the fig. AD/6 = 2/4 by cross - multiplication, 4AD = 12 AD = 12/4 AD = 3 therefore, AD = 3 since DE//BCTherefore using Thale's theorem we getAD/DB=AE/ECAD/6=2/4AD=(2x6)/4AD=3cm is the correct answer 3 Is the correct answer of the given question let AD=XBY THELES THEOREMSAD/AB= AE/ACX/X+6= 2/66X= 2X+126X-2X= 124X= 12X= 12/4=3cmAD= 3cm By Using Thales Theoram, AD AE x 2------ = ------ => ------ = ------ AB AC x+6 6 => 6 ( x ) = 2 ( x+6 )=> 6x - 2x = 12=> 4x = 12 12=> x = ------ = 3cm 4 AD/DB=AE/EC (By B. P. T) AD/6=2/4 ( cross multiply)4AD=12AD=12/4=3then AD=3 |
|