Answer:
132.54cm²
Step-by-step explanation:
We can use the formula [ C²/4π ] to solve.
= 40.8²/4π
= 1,664.64/12.56
≈ 132.54cm²
Best of Luck!
Answer:
(a) 40,320
(b) 576
Step-by-step explanation:
(a) We are asked to find the number of orders in which four girls and four boys can walk through a doorway single file if there are no restrictions.
Since there are 8 people in total, so they can walk in 8! ways.

Therefore, four girls and four boys walk through a doorway single file in 40,320 ways.
(b) To find the number of ways in which four girls and four boys can walk through a doorway single file if the girls walk through before the boys.
The total number of ways would be equal to product of 4 girls walking first and 4 boys walking after.
4 girls can walk first in 4! ways and boys can walk after in 4! ways as well.

Therefore, four girls and four boys can walk through a doorway single file if the girls walk through before the boys, in 576 ways.
3x-6/x-2
3(x-2)/x-2
3
3 is the simplified form
Answer:
d) 63 square units
Step-by-step explanation:
x = 3 units (base - b)
y = 6 units (width - w)
h = 7 units (length and height - l and h)
- Area of a rectangle: l*w
- Area of a triangle: 1/2*b*h
For the triangles:
Area of a triangle: 1/2*b*h
A = 1/2 * 3 * 7
A = 1/2 * 21
A = 10.5
*Since there are two triangles, it would be 10.5 * 2 = 21
For the rectangle:
Area of a rectangle: l*w
A = 7 * 6
A = 42
Now, we add them together:
A = 42 + 21
A = 63 square units
Therefore, the area of the parallelogram is 63 square units
Hope this helps!
Um Plan B would be two dollars cheaper than plan A ..
I set the equations up like this :
5+2.50x=
24+1.50x=
Only because thats how many movies she plans on watching.
5+2.50(21)=57.50
24+1.50(21)=55.50