The square root to the nearest integer is 7 because 7 times 7 is 49
Answer:
.
Step-by-step explanation:
Answer:
The area of the pool is 113.097 meters squared
Step-by-step explanation:
The formula for the area of a circle is : 
The radius is the length form one side to the centre of the circle.
To work out the area of the pool you would need to multiply pi by the radius of 6 squared, this gives you 113.097 meters squared. This is because if you were to substitute the radius of 6 into the formula for the area of the circle, which is , you would get the same answer of 113.097.
1) Multiply pi by 6 squared.
A.) To find the perimeter, add two lengths and two widths.
length= 3x+7
width= 2x-3
3x+7+3x+7+2x-3+2x-3
Combine like terms
you end up with an expression like this:
14x+8 cm
B.) Plug in 4 for x into the new expression:
14(4)+8
perimeter=64 cm
C.)When multiplying polynomials, it's just like normal multiplication, except remember to add the exponents.
3x*2x=6x^2
7*-3= -21
So, the new expression is:
6x^2-21 cm squared
D.) Again, plug in the 4 for x.
6(4^2)-21
4*4=16
16*6=96
96-21=75
Area=75 cm squared
E.) If the length is 5 cm longer:
Remember, the length is 3x+7
So, just add 5 to the expression.
7+5=12
The new expression is:
3x+12
Then, add that like you did before.
3x+12+3x+12+2x-3+2x-3
New expression:
Perimeter=10x+18 cm
