Answer:
<h2>
176 cm²</h2>
Step-by-step explanation:
you have a square and 4 equal triangles, you find the area of all, and you sum.
square area = l²
8² = 64 cm²
triangle area = b*h/2
8 * 7 : 2 = 28 cm²
now we sum 1 square's area and 4 triangles' area.
64 + 28 + 28 + 28 + 28 = 176 cm²
or
64 + (28 * 4) = 176 cm²
You could expect about 1,248 students to play at least 4 hours every week.
Our tables have 100 students involved. All but 4 of the students are in the category of at least 4 hours. That is 96%.
Therefore, we simply need to multiply 0.96 by 1300 to get the estimated amount.
0.96 x 1300 = 1248
Answer:
$18.80
Step-by-step explanation:
1410/75 = 18.8
Answer:
Step-by-step explanation:
The area of a trapezoid of parallel sides of different lengths a and b and height h is
A = (average of side lengths)(height)
Here, that would be:
10x - 2 + 16x + 10
A = -------------------------- * (10x + 9)
2
Simplifying this expression, we obtain:
26x + 8
A = -------------- (10x + 9), or A = (13x + 4)(10x + 9)
2
If we choose to complete the multiplication, we obtain:
A = 130x^2 + 117x + 40x + 36, or
A = 130x^2 + 157x + 36