Answer:
x=25
Step-by-step explanation:
Since both triangles are similar, you can set them up as a proportional problem
x/20=32/(8+20+12) Solve for x, you can so cross multiply method.
32x=800
x=25
Answer:
The picture just shows the beginning logic. We now know that we need to find a polygon with an interior angle that has a ratio of 1:3 with its exterior angle.
We can use this formula to find the number of sides of the polygon:
((n-2)×180)/n = 120
(n-2)×180 = 120n
180n - 360 = 120n
60n = 360
n = 6
We now know that the shape has 6 sides with 120 degree interior angles.
A shape with 6 sides is a hexagon.
Area of semicircle = (πr²) ÷ 2
Area of semicircle:
= (3.14)(2)² ÷ 2
= (3.14)(4) ÷ 2
= 12.56/2
= 6.28
1 in equals 25.4mm exactly so
.25in(25.4mm/in)=6.35mm
Hi there! To round a number, you need to look at the numbers behind the decimal point. In this case, those two numbers are 2 and 5. Since 5 is in the range up rounding up (which is 5-10), we can round .25 up to .3. Now, we have 38.3. Because 3 is less than 5, we can round 38.3 down to 38.
Hope this helps!