Plug in the known information to find the radius
r= radius
Area= πr^2
58= (3.14)r^2
divide both sides by 3.14
18.4713375796= r^2
take the square root of both sides
4.2978294033 feet= r
CIRCUMFERENCE
C= 2πr
C= 2(3.14)(4.2978294033)
C= 26.99 feet (or rounded to 27 ft)
ANSWER: 26.99 feet (or rounded to 27 ft)
Hope this helps! :)
A, b, c : independent
x, y : dependent
Set up a proportion
12/8 = x/20
cross multiply
8x = 12*20
8x = 240
divide both sides by 8
x = 30 ounces of cheese
CHECK
12/8 ?=? 30/20
1.5 ?=? 1.5 CHECKS
First, you have to think of two binomials that when multiplied together yields the polynomial x2 + 4x - 21. Question would be: what are the two number that when multiplied with each other equals -21 and when added together sums up to 4?
That would be +7 and -3. Because 7 × -3 = -21 and 7 + -3 = +4
Thus, the factor would be
(x + 7)(x - 3) = 0
By zero product property,
(x + 7) = 0 and (x-3)=0
x = -7 and x = 3
Notice that even if 7 has a negative sign, when substituted to the polynomial, you take its square so it would still be positive. Thus, the absolute value is taken.
Thus, the possible dimensions of the rectangle are 7 and 3 units.