Answer:
area of the circle = 36π cm²
But area of a circle = πr²
Which means,
πr² = 36π
r² = 36π/π
r² = 36
r = √36 = 6 cm
Radius = 6 cm
Answer:
x = -1.59
Step-by-step explanation:
We are here given a equation and we need to solve out for x. The given equation is ,
Take log to the base " e " on both sides , so that we can remove the variable from the exponent .
Simplify using the property of log , 
, we have ,
Distribute by opening the brackets ,
This can be written as ,
Divide both sides by ln 4 ,
Simplify ,
On simplifying , we will get ,
Answer: Area = 1500 feet^2
Step-by-step explanation:
Jim is enclosing a rectangular garden with 170 feet of fencing. This means the perimeter of the rectangular garden =170 feet
Let length = x
Let width = w
The length of the garden,x is 10 feet more than twice it's width, w. This means
x =10+2w---------1
Perimeter = 2x+2w =170---------2
Putting equation 1 in equation 2,
2(10+2w) +2w= 170
20 + 4w +2w = 170
6w = 170-20=150
w = 150/6
= 25feet
Put w=25 in equation 1
x =10 +2×25= 10+50=60 feet
Area = length × width = x×w
= 60×25=1500feet^2
Answer:
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Step-by-step explanation:3
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