You'll need the following materials:
-- one medium sharp stick
-- one broad-tip black marker
-- a metric tape measure
-- 5.05 or 5.1 meters of string
Proceed as follows:
-- Tie one end of the string around the medium sharp stick.
-- Stick the sharp end of the medium sharp stick into the ground.
-- Tie the other end of the string around the broad-tip black marker.
-- Lay the string against the metric tape measure. Wind it around the
marker until the length of the string between the sharp stick and the
marker is 5 meters.
-- With the body of the marker upright, place the tip of the marker lightly
on the ground.
-- Without letting the string go slack, slowly and carefully walk around the
sharp stick. As you walk, stay all bent over, and rub the point of the marker
on the ground, leaving a black mark.
-- Keep going until you have walked all the way around the sharp stick.
Then, slowly and carefully, stand up and stretch.
-- Now you may look around and see what you have created. There is
a black circle markled on the ground, with a radius of 5 meters, with its
center located at the place where the sharp stick is stuck in the ground.
You should leave the sharp stick there, to mark the center of the circle.
But you should now remove marker and the string, and dispose of them
properly. You'll need them no longer, unless you're called upon to reprise
your demonstration.
A circle with a radius of 2.5 meters has an area of 19.63 square meters.
Use the formula: A = pi x r2. That is, area = pi x radius squared.
5m-5n+5m+5n When simplified: 10m
Volume = 1/3*pi*52*6 = 50*pi cubic m
25
Radius of circle: 5/2*pi m
A circle with a radius of 2.5 meters has an area of 19.63 square meters.
radius = diameter/2 so in this case it would be 2.5 metres.
Circumference of the circle: 2*pi*5 = 10*pi m
Use the formula: A = pi x r2. That is, area = pi x radius squared.
5m, taking an online math test? Pathetic.
78.5m2a = (3.14) (5m)2a = (3.14) (25m2)a = 78.5m2
A radius of 5m means a circumference of 31.4 meters.
150
Area = pi*r2 = pi*52 = 78.54 sq metres
circumference = 2pi5 = 31.416 m rounded to 3 decimal places
The answer depends on whether 5m refers to the radius or diameter.