Answer:
13 m²
Step-by-step explanation:
To find the area of the shaded region, subtract the sum of the triangles from the area of the shape.
The area is 81*pi-162. Look at the triangle formed by the chord and the two radii connected to the endpoints of the chord. Since 18^2+18^2=(18*\sqrt2)^2, this is an isosceles right triangle by Pythagorean theorem. The area of the quarter circle containing the region we look for is pi*18^2/4=81*pi. The area of the right triangle is 18*18/2=162. The difference between these two areas, or 81*pi-162, is the area of the smaller region.
The product is
-36x^6y-9xy^3+36x^3y-9xy^2
TY=15 because the points bisect each other
Because the opposite sides are congruent, so are the angles.
4x+20=40
subract 20 from both sides
4x=20
divide by 4 on both sides
x=5
