Answer:
Step-by-step explanation:
Pretty sure u can not simplify that further since there are no like terms? could be wrong
You are told that the angle the shape makes is 90 hence its a quarter of the circle so you just find the area of the full circle and divide by 4
(6^2*pi)/4
36pi/4
9pi which is around 27 2 Sig fig
The exponent 2 outside the brackets is distributed on 3 as well. 3 exponent 2 gives 9, not 6. answer would be 9x^4y^8