Answer:
The surface area of the triangular prism is 
.
Step-by-step explanation:
The surface area of any prism is the total area of all its sides and faces. A triangular prism has three rectangular sides and two triangular faces.
An equilateral triangle is a triangle with all three sides of equal length.
To find the surface area, the area of each face is calculated and then add these areas together.
The formula 
is used to find the area of the triangular faces, where A = area, b = base, and h = height.
The formula 
is used to find the area of the three rectangular side faces, where A = area, l = length, and w = width.
The surface area of the triangular faces is:
The surface area of the three rectangular side faces is:
The surface area of the triangular prism is 
.
<span>Open and closed circles are used to mark the end points of intervals.
If the circle is open, it means the end point is NOT included in the interval,
but if the circle is closed, it means the end point is included.
Consider the interval . In this interval, the low endpoint, the 3,
is not included because you have a 'less than' sign. The high endpoint, the 6,
is included because you have a 'less than or equal' sign. It is the presence
or absence of the 'or equal' part that determines whether the circle is closed
or open.
The interval would be marked on the number line with an open
circle at 3, a closed circle at 6, and a heavy line connecting the two.
</span>
Answer:
A-75 and B-25
Step-by-step explanation:
Firstly, divide the 200 students by the amount of sections (8) and that gives you 25 a section. Since year 7 has 3 sections and year 9 has 1, 3(25)=75 and 25(1)=25.
