Answer:
Step-by-step explanation:
Michael has 225 milliliters of a liquid. To find out the number of grams of calcium in this liquid, Michael multiplies the volum
1 answer:
In mathematical operations with significant figures the answer must r<span>eflects the reliability of the least precise number. 225 has three significant figures, whereas 0.015 has two -leading zeroes are not significant figures, so our answer must have two significant figures to reflect the reliability of the number 0.015, which has two significant figures.
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We can conclude that <span> the number representing the amount of calcium in the liquid will have two significant figures.</span>
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We can conclude that <span> the number representing the amount of calcium in the liquid will have two significant figures.</span>
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<h3><u>Answer:</u></h3>
Here , two circles are given which are concentric. The radius of larger circle is 10cm and that of smaller circle is 4cm . And we need to find thelarea of shaded region.
From the figure it's clear that the area of shaded region will be the difference of areas of two circles.
Let the,
- Radius of smaller circle be r .
- Radius of smaller circle be r .
- Area of shaded region be