Question

what is SI units? state and define the fundamental units inS. I. 4mark answer​

Answer 1

Explanation:

Rectangles A and B are of the same size. A is standing on its smaller side whereas B is lying on the larger side. The leftmost lowest points of both the rectangles is O. What is the angle between diagonals of A and B passing through point O?

Answer 2

Answer:

Fundamentals of SI Units

The foundation of modern metrology is the International System of Units (SI), which is used internationally to define the fundamental units of measurement. These are used to derive other units and are used to define other measurement units, such as may be used locally.

The SI consists of 28 units:

7 Base Units

2 Supplementary Units

19 Derivative Units