Advertisements
Advertisements
प्रश्न
The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.
उत्तर
Given:
radius: 3.12 m (Three significant figures)
Solution:
Area of the circle = πr2 = 3.14 × (3.12 m)2 = 30.566
If the result is rounded off into three significant figure, area of the circle = 30.6 m2
APPEARS IN
संबंधित प्रश्न
How many significant figures are present in the 126,000?
How many significant figures are present in the 2.0034?
How many significant figures should be present in the answer of the following calculation?
5 × 5.364
How many significant figures should be present in the answer of the following calculation?
0.0125 + 0.7864 + 0.0215
The mass of a box measured by a grocer’s balance is 2.300 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is
- What is the total mass of the box?
- What is the difference in the masses of the pieces to correct significant figures?
A LASER is a source of very intense, monochromatic, and unidirectional beam of light. These properties of a laser light can be exploited to measure long distances. The distance of the Moon from the Earth has been already determined very precisely using a laser as a source of light. A laser light beamed at the Moon takes 2.56 s to return after reflection at the Moon’s surface. How much is the radius of the lunar orbit around the Earth?
State the number of significant figures in the following:
6.320 J
Answer the following question.
Describe what is meant by order of magnitude.
Write a short note on the following.
Rounding - off
The number of significant figures in 0.06900 is ______.
