So the area of a circle is pi x the radius squared.
To find the radius we need to half the diameter so 2.85mm
Next we need to square this so 2.85 x 2.85 = 8.1225mm
The area = pi x 8.1225
= 25.51758633mmsquared
= 25.5 mmsquared
Let us assume base of the window = b feet.
Height is 3 feet less than base, that is = (b-3).
Given area of the triangle = 20 feet square.
We know formula for area of a triangle:
Area =
× Base × Height
Plugging values in formula, we get
20 = 




Factoring quadratic, we get
=0
b+5=0
b=-5
b-8=0
b=8.
For base we can take only positive value.
<h3>Therefore, base of the triangle = 8 feet and height = 8 -3 = 5 feet.</h3>
Answer:

Step-by-step explanation:
Answer:
1.27 radians
Step-by-step explanation:
Answer:
x1.5
Step-by-step explanation:
say x is 1 then is we multiply by 2 we get 2 and if we decrease 2 by 25% we get 1.5 and that number works for any number instead of multiplying by 2 and decreaseing by 25% as they reveal the same number.