In the drawing to the right, cube B was cut from a larger cube of surface area 486 cm² resulting in Figure A. The surface area of cube B is 150 cm². What effect did removing cube B from cube A have on the surface area of the
original object?
Choose the correct answer below.
O A. The surface area decreases.
OB. The surface area increases.
O C. The surface area does not change.
OD. Not enough information

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.