Question

EXERCISE 15D
1. Find the length of the hypotenuse of a right triangle, the other two sides of which measure
9 cm and 12 cm.
RS Aggarwal class 7​

Answer 1

Answer:

see , we know that a^2 + b^2 = c^2

if the two sides are 9 and 12 cm

if we square the both sides , we get 81 cm + 144 cm = 225 cm

square root of 225 is 15

hence , the length of the hypotenuse becomes 15 cm

hope it helps you

Answer 2

Answer:

we know that;to find the hypotenuse of a right angled triangle we use the heron's formula ie.,

base²+perpendicular²=

hypotenuse²

Step-by-step explanation:

Here, the given data is:

base=9cm

perpendicular=12cm

So, hypotenuse =√base²+perp²

=√9²+12²=√81+144=√225=15cm

Thus 15cm is the length of the hypotenuse

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