So 2.5 km is 1/2 the distance around the lake
lake=circle
therefor
2.5=1/2circumference
we must find the circumference to find radius then diameter to find the distnace from one side to the other
2.5=1/2 circumference
multipiliy by 2
5=circumferneece
circumference=2pir or pid
r=radius=distance from middle of circle to outer edge
d=diameter=2 times rasius, or lonest line drawn in circle (we want to find this to see how far it is from one end of the circle to ther other)
5=circumference=pid
5=pid
divide both sides by pi
5/pi=d
aprox pi to 3.14 for the problem
5/3.14=d=1.59 rounded
so
A. 1.59 km
B. 1.5 km per hour swim and 3km per hour walking
we see that 1.59 is greater than 1.5 so it wil take more than 1 hour to swim
we see that 2.5 is smaller than 3 so it will take less than 1 hour to walk
it is faster to walk
A. 1.59 km
B. walking
(5,1) is the function of the given equation
I don't see the question.
Answer:
-2x+4r = 4 i think
Step-by-step explanation:
Answer:
Width=20 feet
Since Length=Width=20 feet, the rectangle is a Square.
Step-by-step explanation:
Area,
To determine the width of the rectangle that gives the maximum area, we take the derivative of A and solve for its critical point.
The width of the rectangle that gives the maximum area =20 feet.
Perimeter of a rectangle=2(l+w)
Perimeter of the rectangle=80 feet
2(l+w)=80
2l+2(20)=80
2l=80-40
2l=40
l=20 feet
Since the length and width are equal, the special type of rectangle that produces this maximum area is a Square.