Question

Find the value of x in the given figures.
a. BC = 8 cm, AD = 4.5 cm,
СЕ = x, AB = 9 cm. plz help ​

Answer 1

Answer:

the area of the triangle ABC is

1/2×BC×AD as AD is perpendicular to BC

=1/2×8×4.5 sq cm

=4×4.5sq cm

=18 sq cm

again area of the triangle is 1/2×AB×EC

when AB is the base and EC is perpendicular on AB

so,

1/2×AB×EC=18

=> 1/2×9×EC=18

=> 9EC=18×2=36

=> EC=36/9=4

=> x=4

value of x=4