The World of Math

Introduction to world math :

In this article we are going to discuss about world math  Now a days math is one of the widely used part in the world. Sometimes math will challenge to solve the problems but every math has a solution to prove it. Let we see some math challenge problems to world math.

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Example Problems for math problems:


world math problem 1

Find the value for x in the expression `x/8` +x-`4/8` =0

Solution:

The given expression is `x/8` +x-`4/8` =0

We need to find the value of x

`x/8` +`(8x-4)/8` =0

The above expression can be written has

`x/8` +`(8x)/8` -`4/8` =0

Now add `4/8` on both sides of above equation

`x/8` +`(8x)/8` - `4/8` +`4/8` =`(0+ 4)/8`

`x/8` +`(8x)/8` =`4/8`

`(9x)/8` =`4/8`

Multiply by 8 on both sides of above equation

`(9x)/(8)xx(8)=` `4/8 xx8`

9x=4

Now divide by 9 on both side of the above

x=`4/9`

world math problem 2

Multiply the fraction `120/65` and `148/96`

Solution:-

Given we need to multiply fractions`120/65` and `148/96`

Fractions must multiplied using the formula `(axxc)/(bxxd).`

Here a = 120, b =65, c= 148, d=96

= `(axxc)/(bxxd).` =`(120xx148)/(65xx96) ` by solving it we get

A =`17760/6240`

= `37/13`

world math problem 3

Find the area of the circle with radius 54 feet. Important use symbol pie value approximately as 3.14

Solution:

We know that area of circle is equal to `pi` r2

Here the given radius is 54

Substitute the r value in the formula

=3.14x 542

=3.14x 54x 54

=9156.24

Therefore the area of circle is 9156.24 feet square

world math problem 4

Fine the surface area of cube in kilometers for the side is 30 m

Solution:

Area of cube A=6 * 302

A=6 *900

A=5400sq meters

1 square meter = 0.000001 square kilometer

5400 square meter = 5400 * 0.000001  = 0.0054

now surface area in kilometer is 0.005400 sq kilometers


Few More Example Problems for math problems


world math problems 5

Subtract the two fractions `32/15` and `94/15`

Solution:

The two given fractions are`32/15` and `94/15`

Step1: The given two fractions

`32/15` - `94/15`

Step2: Now we need to find the differences of `32/15` and `94/15`

`(32-94)/15`

Step3: The difference of 32 and 94 is -62

=-`62/15`

world math problem 6

Find equivalent fraction `7333/336`

Solution:

Equivalent fraction has to multiply numerator and denominator by same number

Denominator is 336 and the numerator is 7333

Multiply the denominator and numerator by 160

= `(7333xx160)/(336xx160)`

= `1173280/53760`

So the equivalent fraction is `7333/336` is` 1173280/53760`