Which angles are supplementary to each other?
1 answer:
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Answer:
a) , b)
, c)
, d)
Step-by-step explanation:
a) The perimeter is the sum of the three sides of the internal square and the remaining sides of the external rectangle, that is:
b) The perimeter is the sum of the two sides of the internal triangle and the remaining sides of the external rectangle, that is:
c) The perimeter is the sum of the two sides of the circular section and the three sides of the lower rectangle, that is:
d) The perimeter is the sum of the external sides of the triangle and rectangle, that is:
The circumference of a circle is 
and it coresponds to a 360 degree angle.
The circumference of the circle is 2*4*pi=8pi m=25.12m
25.12m......360 degrees
10 m.........x degrees
x=10*360/25.12=143.31 degrees
The circumference of the circle is 2*4*pi=8pi m=25.12m
25.12m......360 degrees
10 m.........x degrees
x=10*360/25.12=143.31 degrees