Joylin must stack 3 blocks identical to the one shown below.
6 in
What strategy for stacking the blocks will produce a stack with the least surface area?
Create a stack where the 5-inch-by-6-inch faces of the blocks touch.
O Create a stack where the 5-inch-by-8-inch faces of the blocks touch.
Create a stack where the 6-inch-by-8-inch faces of the blocks touch.
Create a stack where two different-sized faces of the blocks touch.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8