we know that
To Round a number
a) Decide which is the last digit to keep
b) Leave it the same if the next digit is less than (this is called rounding down)
c) But increase it by if the next digit is or more (this is called rounding up)
In this problem we have
We want to keep the digit
The next digit is which is less than , so no change is needed to
therefore
the answer is
Enter your answer in the box.
Answer:
42 sq. units
Step-by-step explanation:
I don't know if there's an easier way to do this but this is what I came up with. We can break this hexagon into 2 triangles and a rectangle (the 1st triangle using the top 3 points, the 2nd using the bottom 3, and the rectangle using the "middle" ones).
Rectangle area: 7*4 = 28
Triangles (they are equal) : 2*(1/2*7*2) = 14
28+14 = 42
Answer:
42 units squared
Step-by-step explanation:
break it up into smaller shapes. if you split the big shape at y = 2 and at y=-2, you'll get two triangles and one rectangle.
so the area of the rectangle = l x w
= 4 x 7
= 28
the area of the triangle is ( l x w )/2
= (7 x 2)/2
= 7
the other triangle is the same too
so the area of that is also 7.
now add all areas,
7+7+28 = 42
The total number of seats in this movie theater is 4224. This is calculated using the sum of an arithmetic series formula.
The question describes an arithmetic sequence where each row in the theater has four more seats than the previous row. The first row has 20 seats and the last row (44th row) has seats. The total number of seats in this theater is therefore the sum of an arithmetic series formula, which is given by:
Where:
So for the number of seats, we have:
So, the total number of seats in the theater is 4224.
#SPJ3