Answer:
a) 325.72
Step-by-step explanation:
A=4pir^2
A=4x3,14x7.2x7.2
a=651.44
1/2a=1/2x651.44
=325.72
Answer:
36 inches
Step-by-step explanation:
P= 2l + 2w
P= 2(10) + 2(8)
P= 20 + 16
P= 36
Answer:
A integer is any number that is not either a decimal or a fraction (however, both 2.000 and 2/2 are integers because they can be simplified into non-decimal and non-fractional numbers), this includes negative numbers. A whole number is any positive number(0 through infinity) (including non-integers)
Step-by-step explanation:
it's basically a just any number but can't be a decimal or fraction
Answer:
437mm²
Step-by-step explanation:
First we need to find the total area of the rectangle. The area of a rectangle can be found by using the formula:
A = L x W
L = 15mm
W = 38mm
So now we plug it into our formula.
A = 15mm x 38mm
A = 570mm²
Now that we have the total area, we now need to solve for the area of the triangle.
The area of a triangle can be found by using the formula:
![A=\dfrac{1}{2}bh](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7B1%7D%7B2%7Dbh)
To find the height of the triangle we take the total height and subtract it to the measurement given in the figure.
h = 15mm - 8mm
h = 7mm
b = 38mm
Now that we have both the base and height we can use the formula for the triangle.
![A=\dfrac{1}{2}38*7](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7B1%7D%7B2%7D38%2A7)
![A=\dfrac{1}{2}266](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7B1%7D%7B2%7D266)
![A=0.5*266](https://tex.z-dn.net/?f=A%3D0.5%2A266)
![A=133mm²](https://tex.z-dn.net/?f=A%3D133mm%C2%B2)
Now that we have the area of both the triangle and the rectangle, we simply subtract the area of the triangle to the area of the rectangle.
Shaded Area = 570mm² - 133mm²
Shaded Area = 437mm²
The area of the shaded area is equal to 437mm².
Answer:
B
Step-by-step explanation:
Since the ratio is 2:220 we can simplify this into 1:110 since the questions is asking about 12 inches, we multiply each side by 12 which gives us a ratio of 12:1320