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What is the exact area of a circle having diameter 7 in?
area = 3.14 x 7 x 7 / 4 = 38.465 square inches
What is a line that will divide a shape in to two exact halves?
a diameter for a circle possibly a bisector for other shapes
What is circumference of a circle with a radius of 4 cm?
circumference formula is pi(diameter) diameter is 2(radius) radis=4; diameter=2(4)=8 pi(8)=circumference of the circle...this is the EXACT answer plug it into a calculator and you will get 25.1327412287 your welcome ;)
What is the exact area of the circle with the given radius or diameter r 11.64 m?
A circle with a radius of 11.64 meters has an area of 425.653131998 square meters.
How do you find out the circumfrance of a circle?
To find the circumfrance of a circle, you need to multiply 2 times pi, times the circle's radius. If you don't know what that is, you multiply two times pi, and pi equals 3.14, and then multiply that by the radius, which is the measurement of half the circl'e diameter. the diameter is the distance from one side of the circle, to the exact opposite. you measure this with a ruler. HALF the measurement of the diameter is the radius. Example---the diameter of a circle is 20 cm. half the diameter is 10 cm, which is the radius. Multiply 2 times pi[which equals 3.14], times the radius. Good luck!
