Class-7th RS aggrawal Chapter-20 Mensuration Exercise.20A Question-2Can Any One Tell After This As Given In Attachement​

Explanation:

Answer:

3.68 as a fraction equals 368/100 or 92/25

Steps to convert 3.68 into a fraction.

Multiply both the numerator and denominator by 10 for each digit after the decimal point.

3.68

1

=

3.68 x 100

1 x 100

=

368

100

In order to reduce the fraction find the Greatest Common Factor (GCF) for 368 and 100. Keep in mind a factor is just a number that divides into another number without any remainder.

The factors of 368 are: 1 2 4 8 16 23 46 92 184 368

The factors of 100 are: 1 2 4 5 10 20 25 50 100

The Greatest Common Factor (GCF) for both 368 and 100 is: 4

Now to reduce the fraction we divide both the numerator and denominator by the GCF value.

368

100

=

368 ÷ 4

100 ÷ 4

=

92

25

As a side note the whole number-integral part is: 3

The decimal part is: .68 = 68/100

Full simple fraction breakdown: 368/100

= 184/50

= 92/25

Answer:

Concentrated HNO3 can be stored and transported in aluminium containers as it reacts with aluminium to form a thin protective oxide layer on the aluminium surface. This oxide layer renders aluminium passive.

Explanation:

Two balls are drawn successfully without replacement from a box which contains 4 white balls and 3 red balls. What is the probability that both balls are red?

The probability of the first ball being red is 3/7 (red balls/total balls)

Now that the number of red balls is

Answer:

Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.

During inhalation, the diaphragm moves up and flattens.

During exhalation, the diaphragm moves down to it's original position.