X/28 = 5/7
x = 28 * 5 / 7
x = 20
answer
x = 20 ft
Answer:
SA = 105 in^2
Step-by-step explanation:
To find surface area, find the area of all the shapes and add it all together. This shape has 4 triangle faces. They are all the same. So we can find one of them and times by 4.
Area of a triangle:
A = 1/2b•h
= 1/2• 5 • 8
= 1/2 • 40
= 20
One triangle has area 20, so times by 4 (bc four triangles)
4•20
= 80
Area of square 5•5
= 25
Add the areas:
80 + 25
= 105 sq in
Answer and Step-by-step explanation:
The circumference formula for a circle is:
C = 
Plug 35 in for r (radius) and solve.
C = 
So, approximately 219.9 
is the answer.
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
15) factor out cos: cos(x)(sin(x)+1)=0
Now this is true when either cos(x)=0 (x=pi/2 and 3pi/2)
Or when sin(x)=-1 (x=3pi/2)
So it's solutions are pi/2 and 3pi/2
