For what value of a does 9= (1/27)^a+3?

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.