Answer:
Perimeter of the quarter circle will be 24.997 cm.
Step-by-step explanation:
Picture shown is a sector of a circle having an angle inscribed = 90° at the center
Formula to get the circumference of the sector is,
Circumference of the sector =
C =
C =
C = 10.997 cm
Now perimeter of the figure = Sum of lengths of all sides
P = 2r + C
P = 7 + 7 + 10.997
= 24.997 cm
Therefore, Perimeter of the quarter circle will be 24.997 cm.
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Answer: When increasing your multiplying x>1 because 45 times 1 is 45 to get 75 you multiply by approximately 1.65
Step-by-step explanation:
Answer:
x=3 sorry if I am wrong.
Step-by-step explanation:
(5x-2)=(3x+4)
-3 -3
2x-2=4
+2 +2
2x=6/2
x=3
Answer:
r = 6.40 feet
Step-by-step explanation:
Given line AB is tangent to circle O at point A, this means ∡OAB = 90°
Hence this is a right angle triangle and we can use the Pythagorean theorem.
r² + 20² = 21²
r² = 21² - 20²
r² = 441 - 400
r² = 41
r = √41 = 6.40 feet