Find the length of the missing triangle

Step-by-step explanation:

Since the triangle is a right angled triangle we can use Pythagoras theorem to find the missing side a

Using Pythagoras theorem we have

a² = b² + c²

where

a is the hypotenuse

So we have

We have the final answer as

Hope this helps you

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.