Multiplication and division of fractions

Multiplication 
In general, when we multiply fractions, we multiply
the two numerators (the top numbers) to make the new
numerator, and multiply the two denominators to make
the new denominator.
For example:

7       4  
---- * -----
5       3


  7 * 4  
= --------
  5 * 3

   28
=  -------
   15


Division


7       4  
---- / -----
5       3

We can change this to multiplication by
simply changing the second fraction like,

7       3  
---- * -----
5       4


  7 * 3  
= --------
  5 * 4

    21
=  -------
    20

a word problem on finding the area

Topic:- Finding Area

Area is a quantity expressing the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve. The term surface area refers to the total area of the exposed surface of a 3-dimensional solid, such as the sum of the areas of the exposed sides of a rectangle. Area is an important invariant in the differential geometry of surfaces

Question: -

The width of a swimming pool is 10 meters and
length is 30 meters. Then find the area of the
pool.

Solution:-

This geometry help ,will give you the solution of above question.

width of thepool = 10 meters

length of the pool = 30 m

Area of the pool = Area of the rectangle ( as the pool is in the shape of a rectangle) Length

x breadth = 10 x 30

= 300 square meters

So the area of the pool is 300 square meters


For more help on this ,Please reply me .