Question

E. Short answer type questions.
What do
you understand by area? State its SI unit.
7. What is volume? Give its SI unit.
3.
What are the different units to measure speed? When is each unit used?​

Answer 1

Answer:

hi mate

here is the answer

1. The product of length and breadth of 2d substance is known as the area of the surface or the plot.

It's S.I. unit is (unit)²

2.the product of length, breadth and height of a 3d substance usually for measuring it's capacity is known as volume of a substance.

It's S.I. unit is (unit)³

the different units to measure speed are kilometre per hour and mile per hour

kilometre per hour is used when the journey is in kilometres and miles per hour is used when the journey is in miles

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Answer 2

Answer:

1.Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance or shape occupies.

The SI unit of volume is the cubic meter (m 3 ), which is the volume occupied by a cube that measures 1 m on each side.

2. Area is the quantity that expresses the extent of a two-dimensional figure or shape or planar lamina, in the plane.

The SI unit of area is the square metre,

3. Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour.

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