You have two triangles, ADC and ABC.
Sides AD and AB are congruent.
Sides DC and BC are congruent.
Side AC is congruent to itself.
By SSS, triangles ADC and ABC are congruent.
Corresponding parts of congruent triangles are congruent.
That means that angles DAC and BAC are congruent.
Angles DCA and BCA are congruent.
Since m<DAC = 32, then m<BAC = 32
Since m<DCA = 41, then m<BCA = 41.
Now you know the measures of two angles of triangle ABC.
The measures of the interior angles of a triangle add to 180.
You can find the measure of angle B.
m<BAC + m<B + m<BCA = 180
32 + m<B + 41 = 180
m<B + 73 = 180
m<B = 107
Step-by-step explanation:
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Answer: 
Step-by-step explanation:
This is a rectangle missing a piece which looks like a triangle.
Find the area of the rectangle and subtract the area of the triangle.
Rectangle:

Triangle:

Now subtract the area of the triangle from the area of the rectangle.

Answer:
5.6%
Step-by-step explanation:
The formula used is the change divided by the original amount, then converted to a percentage by multiplying by 100.
The answer would be 7.564
Here is the work and next to it I checked the answer