Question

1.

In the given
figure
LA = 90°, AD is perpendicular to BC. If BD =2cm and CD=8cm ,
find
AD.
​

Answer 1

answer:7.74cm

explanation:firstly draw figure

in rectangle abcd

dc=ab (as opposite sides of rectangle are equal)

apply pythagoras theorem that is H²=P²+B²

where b is 8 cm h is 2 cm .

(2)²=P²+(8)²

4=P²+64

4-64=P²

-60=P²

square rootof -60 =P

P=7.74

hence AD=7.74cm