Question

please help me understand it !​

Answer 1

Answer:

√65 units

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given -

Two points O(origin) and A(7,4)

To Find -

Distance between points O and A

Diagram -

Above in the attachment

It is a rough diagram.

Now,

In ΔOAB,

(OA)² = (OB)² + (AB)²

(OA)² = (7)² + (4)²

(OA)² = 49 + 16

OA = √65

Hence,

The Distance between points O(origin) and A(7,4) is √65 units

Formula Used -

Pythagoras Theorem -

• (Hypotenuse)² = (Perpendicular)² + (Base)²