Question

10. A picture frame is 80 cm by 60 cm. Find its diagonal.​

Answer 1

Step-by-step explanation:

Given, length of picture frame = 80 cm

and breadth of picture frame = 60 cm

Now, length of the diagonal of picture frame = √{(length)2 + (breath)2 }

= √{(80)2 + (60)2 }

= √{6400 + 3600 }

= √(10000)

= 100 cm

So, the length of the diagonal of picture frame = 100 cm

Answer 2

Step-by-step explanation:

by Pythagoras theorem

(hypotenuse)^2= (side)^2+(side)^2

=(80)^2+(60)^2

=6400+3600

=10000

(hypotenuse)^2=10000

hypotenuse=100 cm

so the diagonal is 100 cm