Answer:
radius = 5 units
area of a circle = 15.7units²
Step-by-step explanation:
given that the circumference of a circle = 31.4
radius = ?
recall that the formulae for finding the circumference of a circle = 2πr
circumference of a circle = 2 x 3.14 x r
31. 4 = 6.28r
divide both sides by the coefficient of r which is 6.28
31.4/6.28 = 6.28r/6.28
5 = r
radius = 5 units
therefore the radius of the circle whose circumference is 31.4 units is evaluated to be 5units
to find the area of the circle
recall the formula = πr²
area of a circle = 3.14 x 5²
area of a circle = 3.14 x 25
area of a circle = 15.7units²
Joe wants to build a fence for his dog Charlie.
The lengths of the perimeter of the rectangle that he plans to surround with fence are as follows:
10 feet + 15 feet + 10 feet + 15 +feet.
The total perimeter area of a rectangle is worked out as follows:
10 + 15 + 10 + 15 = 50
Therefore Joe needs 50 feet of fencing to totally surround the rectangle with fence.
Answer:
The value of ∠ABG = 99°. The further explanation is given below.
Step-by-step explanation:
The given values are:
m∠ABG
= 11x
m∠HCF
= 10x + 9
As we know, the alternate angles are equivalent:
and,
Here,
⇒
On substituting the estimated value, we get
⇒
On subtracting "10x" from b0th sides, we get
⇒
⇒
On putting the value of "x" in m∠ABG , we get
⇒
⇒
Answer:
equal to
Step-by-step explanation:
this will make a rectangle making the area the same
Answer:
C
Step-by-step explanation:
The equation of direct variation is y=kx.
K is the constant of proportionality, which is in this case is -3.
y=-3x