You obviously have two circles here, the fountain which is also the inside of the circular walk and the other circle is the outside of the circular walk. Now using your formula for the area of a circle figure out the size of the big circle and subtract the area of the small circle (the … Read more

The area of a triangle is calculated with the formula ½bh, which is one-half base × height. You should plot these three points, you will notice you have a right triangle. Then figure out the length of your base and the length of your height and you can then use the area formula for a … Read more

First you will want to convert 3 6/10 (a mixed fraction) into a compound fraction by taking the 3, multiplying by the denominator - 10 - to get 30. Now add the 6 to that, so you have 36/10 this is also 36.0/10.0   Now move the decimal point in both the numerator and the denominator one … Read more

Divide 7 by 15 and that will give you a decimal. Then to convert to a % move your decimal point two positions to the right. Your answer should be a little less than 50% because 7 out of 14 is 50%.

What you want to do here since you have to unknowns (the price of the hot dog and the price of a drink), is create 2 equations. For example for John 6h + 4d = 6.70. Then create an equation for Jessica also. Then with one of the equations get one variable all alone on … Read more

As you know an equilateral triangle have three sides of all equal lengths, that being

2√3. The radius of your circle will then touch each side of your triangle exactly in the middle of each side so you have one side of a triangle being √3, one side being the unknown radius, and the last

… Read more

The first three prime numbers are 2, 3, 5. Since 7425 ends in a 5 an any number that ends in a 0 or a five is divisible by 5 take 7425 and ÷ by 5  = 1485. 1485 ÷ 5 = 297. Now things get harder. Since 297 isn't evenly divisible by 2, 2 won't … Read more

First 1.5 = 1.5/1 then move your decimal point to the right in both the numerator and the denominator so 1.5/1 = 15/10 then reduce that to simplest terms by factoring 5 out of both the numerator and denominator.

Irrational numbers are real numbers, but square root of 9 which is 3 is not an irrational number, it is a rational number, and integer, whole number and a counting number. Square root of 2 is irrational, but so is pi. What makes a number irrational is not the radical sign but is that the … Read more

Since x was 4 and now it is 16 it is 4 times bigger. So 8 × 4 = 32

If you are 4'12 aren't you 5'? You would be 152.4cm.