Answer:
113.04
Step-by-step explanation:
To find the area of a circle, you multiply 3.14 times the radius squared. To find the radius, you divided the diameter by 2. You get 6. You square 6 and get 36. Multiply that by 3.14 and you'll get 113.04 as your area.
The striped wall and the floor intersect at a 90 degrees angle since they are perpendicular.
<h3>What is an
angle?</h3>
An angle is formed when two or more lines intersect at a point. Types of angles are<em> acute, obtuse, and right angled</em>.
Two lines are said to be perpendicular if there is a 90 degrees angle between them.
The striped wall and the floor intersect at a 90 degrees angle since they are perpendicular.
Find out more on angle at: brainly.com/question/25716982
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Answer:i think its -5 because if you subtract 5 from 10 then its five hnd a negative times a negative is a positive
Step-by-step explanation:
Answer:
a. an = -1 • 4^(n - 1)
Step-by-step explanation:
It's easy see that each term is multiplied by 4 to get the next term, so the common ratio will be 4, that reduces the choices to answers A and B (since C and D use -1 as common ratio). Also, normally a geometric progression uses "n-1", so we'll first try with A to see if it works.
a1 = (-1) * 4^0 = -1 * 1 = -1
a2 = (-1) * 4^1 = -1 * 4 = -4
a3 = (-1) * 4^2 = -1 * 16 = -16
Yes, it works... so the answer is an = -1 • 4^(n - 1)
