Question

EXERCISE 15D
9 cm and 12 cm.
1. Find the length of the hypotenuse of a right triangle, the other two sides of which measure​

Answer 1

Answer:

Hyotenuse^2= sum of square of other two sides

Hypotenuse^2=9^2+12^2

Hypotenose^2=81+144

hypotenose^2=225

hypotenuse= 15 cm

Answer 2

Answer:

I take that you are talking about class 7 maths R.S. Aggarwal.

15cm

Step-by-step explanation:

$a^{2} + b^{2} = c^{2}$

∴ hypotenuse =$\sqrt{a^{2} + b^{2} } cm= \sqrt{9^{2}+ 12^{2} }cm$

= $\sqrt{81 + 144} cm= \sqrt{225} cm= \sqrt{15 * 15}cm = 15cm$