What is true regarding two adjacent arcs created by two intersecting diameters? They always have equal measures. The difference of their measures is 90°. The sum of their measures is 180°. Their measures cannot be equal.

The sum of their measures is 180°

Step-by-step explanation:

In the case when the similar circles are intersected to each other having two diameters so the following conditions would be considered as true

1. The arcs that are opposite would be equal

2. The sum of adjacent arcs would be 180 degrees

3 And, the sum of all arcs would be 360 degrees

So according to the given situation, the third option is correct

And, the rest of the options are incorrect

step-by-step explanation:

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363 square inches

step-by-step explanation:

surface area of a pyramid is b + 1/2ph

b is the area of the base: 11 x 11 = 121

p is the perimeter of the base: 11 + 11 + 11 + 11 = 44

h is the height of the pyramid: 11

121 + 1/2(44)(11)

121 + 242

363