Point o is the incenter of angle abc what is measure qbo

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle ∠QBO

we know that

The incenter of a triangle is the intersection of its interior angle bisectors

so

we have

---> given problem

so

step 2  

Find the measure of angle ∠QOB

we know that

In the right triangle QOB

---> by complementary angles

we have

substitute

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

i think it would be 42cm