Moving point c one unit to the left
Answer:
Step-by-step explanation:
3.9
Remark
I take it the semicircles cover the full width of the paper.
So the radius is 12/2 = 6 cm
Since there are two of them, the area = a full circle.
Step One
Find the area of the rectangle before the cuts were made.
Area = L * W
L = 27
W = 12
Area = 27 * 12 = 324 cm^2
Step Two
Find the area of the circle cut outs.
r = 6
Area = pi * r^2
Area = 3.14 * 6^2
Area = 3.14 * 36
Area = 113.04 cm^2
Step Three
Find the total area left
Total Area Left = rectangle - circle
Total Area Left = 324 - 113.04
Total Area left = 210.96 cm^2 Answer
Hello,
The first step is to see that sides OA, OC, OB are all equal because they are the radii of the circle. Knowing that those sides are equal means that we have isosceles triangles. That gives us that the base angles are the same.
In OAC, we can subtract 118 from 180 to give us 62 degrees for the 2 bases angles. This would make each angle 31 degrees.
In OBC, the base angles are already 31, leaving the other angle 118.
There we have all the angles the same and 2 sides the same.
You could use SAS or ASA to prove that the triangles are congruent.
I hope this helps!
Good luck,
MrEquation
Sorry but I don’t quite get your problem. But if it’s just 8x2y4xy the answer would be 64x^2y^2
