Question

in figure angle 90 degree AD perpendicular BC if BD =2cm and CD=8 find AD​

Answer 1

Question

If figure ∠ADC = 90°, AD ⊥ BC. If BD = 2 cm and CD = 8 cm, find AD.

Answer

Given that

∠ADC = 90°

AD ⊥ BC

BD = 2 cm

CD = 8 cm

To find

AD = ?

Here, we'll find AD by using Geometric Mean theorem.

[By using Geometric Mean theorem],

AD² = BD $\times$ DC

AD² = 2 cm $\times$ 8 cm

AD² = 16 cm

AD = $\sqrt{16\:cm}$

AD = 4 cm

∴ The length of the altitude AD is 4 cm.

Answer 2

Answer:

Here it is...

Step-by-step explanation:

Given that

∠ADC = 90°

AD ⊥ BC

BD = 2 cm

CD = 8 cm

To find

AD = ?

Here, we'll find AD by using Geometric Mean theorem.

[By using Geometric Mean theorem],

AD² = BD  DC

AD² = 2 cm  8 cm

AD² = 16 cm

AD =

AD = 4 cm

∴ The length of the altitude AD is 4 cm.