Answer:
-5 1/x4
Step-by-step explanation:
I think the shape is an right angel. And for the answer to h is 90° and i think for b it is 45°. I hope this helps :)
Answer:
oof thats hard
Step-by-step explanation:
Answer:

Step-by-step explanation:
We have,
Radius of the circle is 12 cm
Arc length, l = 21 cm
It is required to find the central angle of the circle. The formula for the length of an arc of a circle is :

is central angle

So, the angle at the centre of the circle is
.
A= pi times r*r so if you are using 3.14 as pi the answer is 78.5 because 5x5=25
25x3.14=78.5