Question

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Answer 1

CA is the unknown number.

CA^2 = 17^2 + 9^2

CA^2 = 289 + 81

CA^2 = 370

To find the value of CA, we need to take the square root of both sides of the equation:

CA = √370

CA is approximately equal to 19.24cm (rounded to two decimal places). Therefore, the length of the unknown side of this right-angled triangle is approximately 19.24cm

Answer 2

See below

Explanation:

Using the Pythagorean theorem, we can find the length of the unknown side CA.

AC^2 = AB^2 + BC^2

AC^2 = 9^2 + 17^2

AC^2 = 290

AC = √290

Therefore, the length of side CA is approximately 17 cm (rounded to whole).