Please help what is the answer???
1 answer:
E= 42 degrees
All lines add up to 180 degrees so you subtract the exterior angle, 132 degrees, by 180 to get the difference of 48 degrees in the interior angle. Also since the triangle is a right angle, you know the sum of the other two angles add up to 90 degrees. So 48 plus angle E would have to add up to 90 degrees. Therefore 48 degrees plus angle E, 42 degrees, adds up to 90 degrees.
All lines add up to 180 degrees so you subtract the exterior angle, 132 degrees, by 180 to get the difference of 48 degrees in the interior angle. Also since the triangle is a right angle, you know the sum of the other two angles add up to 90 degrees. So 48 plus angle E would have to add up to 90 degrees. Therefore 48 degrees plus angle E, 42 degrees, adds up to 90 degrees.
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Answer:
Step-by-step explanation:
We have been given that at a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m.
To find the area of the side walk we will subtract the area of inner edge of the side walk of lion pen from the area of the outer edge of the lion pen.
, where r represents radius of the circle.
Therefore, the exact area of the side walk is
To find the approximate area of side walk let us substitute pi equals 3.14.
Therefore, the approximate area of the side walk is .