Question

Find the length of AD using the information given in the adjoining figure

• A. True
• B. False
• C. 30 cm
• D. 19 cm

Answer 1

The correct option is B

False

In the given figure Join ED as shown in the figure below

EDBC is a rectangle , Hence ED = 12 cm

In $△AED$

AE = 5 ; ED = 12 cm

Using Pythagoras theorem , we have

$A{D}^2=E{D}^2+A{E}^2$

$A{D}^2={12}^2+5^2$

$A{D}^2=144+25$

$A{D}^2=169$

$AD=\sqrt{169}$

$AD=13cm$