Question

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Find the unknown length x in the following figures ... maths ... Question of class 7 nd chapter is the triangle and it's proprties ​

Answer 1

Answer:

x = 5

Step-by-step explanation:

Given

sides = 3 , 4 , x

We know ,

   The triangle is a right angled triangle (∵ One angle is 90°)

∴ According to pythagoras formula = $A^{2} + B^{2} = C^{2}$

                                                           ⇒ 3² + 4² = x²

                                                           ⇒ 9 + 16 = x²

                                                          ⇒25 = x²

                                                         ⇒ x = √25

                                                        ∴ x = 5

NOTE: According to pythagoras theory the (base)² + (side)² = (hypotenuse)²

So the a means base, b means side and c means the hypotenuse ( the longest side)

Hope you understood clearly