Answer:
13- $2
15-52
Step-by-step explanation:
Answer:
28.6 m²
Step-by-step explanation:
The measurements of the square are 4 by 4; this gives us an area of
4(4) = 16 m²
The quarter circle has a radius of 4 m. The area of a circle is given by
A = πr².
Since we have a quarter circle, we multiply this by 1/4:
A = 1/4πr²
Using 3.14 for π and 4 for r,
A = 1/4(3.14)(4²) = 1/4(3.14)(16) = 3.14(4) = 12.56 m²
Together this gives us a total area of 16+12.56 = 28.56 m².
This rounds to 28.6 m².
Answer:
15
Step-by-step explanation:
1 hr: 5
2 hr: 10
3 hr: 15
Answer:
a
Step-by-step explanation:
Answer:
x = 2
Step-by-step explanation:
The product of distances from the intersection of secants to the near and far intersections with the circle are the same. For a tangent, the near and far points of intersection with the circle are the same. This relation tells us ...
(2√3)(2√3) = x(x +4)
12 = x² +4x
16 = x² +4x +4 . . . . . add the square of half the x-coefficient to complete the square
4² = (x +2)² . . . . . . . . write as squares
4 = x +2 . . . . . . . . . . positive square root
2 = x . . . . . . . . . . . . . subtract 2
_____
<em>Alternate solution</em>
If you believe x to be an integer, you can look for factors of 12 that differ by 4.
12 = 1×12 = 2×6 = 3×4
The factors 2 and 6 differ by 4, so x=2 and x+4=6.
