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In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12