Q2 of 24 Page 4

Find the length of the diagonal of a rectangle of length 12 cm and breadth 7 cm.


In ∆ABC, AB = 12cm, BC = 7cm ∠B = 90°


By Pythagoras theorem


AC2 = AB2 + BC2


= (12)2 + (7)2


= 144 + 49


= 193


Hence, AC2 = 193


∴ AC =


More from this chapter

All 24 →
3

Write the values of

(1) (2)


(3) (4)


(5)

1

The sides forming the right angle of a right angled triangle are 7 cm and 5 cm. Find the length of its hypotenuse.

 3

Find the length of the diagonal of a square with side 8 cm.

 1

Find the square roots of the following numbers to the fourth decimal place by the division method. Then write the approximate value of each square root up to the third, second and first decimal places.

10