Area And Perimeter
Perimeter
The distance ALL the way around a figure.
The new rectangular garden is 56 feet by 87 feet. Fencing will cost $23 per foot. How much will it cost to fence the garden?
$6, 578
The radius of a circle is 2 inches. What is the circumference? (Use 3.14 for Pi while calculating)
12.56 inches
Find the area of a trapezoid with one base of 26 feet, another base of 28 feet and a height of 7 height.
189 square feet
The area of a trapezoid is 142 centimeters square. If one of the bases is 9 cm and the height is 14 cm, what is the length of the other base?
19 centimeters
The area of a triangle is 292.5 inches square. If the base if 13 inches, what is the height?
45 inches
The circumference of a circle is 94.2 centimeters and the diameter is 30. What is the area? (Use 3.14 for Pi while calculating)
706.5 square centimeters
The area of a square is 529 square miles. Find the perimeter.
92 miles
How To Calculate The Perimeter Of A Rectangle
A rectangle has 4 sides. Opposite sides are equal. The perimeter of a square can be found by adding all the sides together, or by adding twice the length to twice the width, thus giving the formula: Perimeter of a rectangle=2W+2L. If the rectangle happens to be a square, you can use the formula 4S.
How To Calculate The Perimeter Of A Square
A square has 4 sides. The perimeter of a square can be found by adding all the sides together, or by multiplying one side length by 4, thus giving the formula: Perimeter of a square= 4S. This works since a square has 4 congruent sides.
Radius
A straight line from the center of the circle to the circumference of a circle or sphere. It is 1/2 of the diameter and thus, can be found by the following formula: Radius= 1/2D.
How To Calculate Perimeter OF ALL POLYGONS
Add the lengths of all the sides together. This formula works for any 2D polygon.
Pi
Pi is a never ending decimal. Millions of digits have been discovered and more have yet to come. When calculating the area and circumference of a circle, usually use 3.14 or 22/7 for pi, unless told otherwise.
Circumference
The circumference of a closed curve or circular object is the distance around its edge. Instead of saying "the perimeter of a circle", the terminology is "the circumference of a circle".
Diameter
The diameter is straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end. It is double the radius and thus, can be found by the following formula: Diameter=2R.
How To Calculate The Area Of A Circle.
The formula for finding the area of a circle is pi times radius squared.
How To Calculate The Circumference Of A Circle
The formula for finding the circumference of a circle is 2 times pi times the radius. Since diameter is 2 times the radius, another formula that could be used to find the circumference of a circle is diameter times pi.
Area
The number of square units that cover the surface of a closed figure.
How To Calculate The Area Of A Square
To find the area of a square, you can multiply the base times the height (BH)/ A.K.A length times width (LW), or since all the sides of a square are congruent, you can square one side to obtain the area, thus giving the formula: Area of a square=S².
How To Calculate The Area Of A Rectangle
To find the area of a square, you multiply the base times the height. This is also known as multiplying length times width.
How To Calculate The Area Of A Trapezoid
To find the area of a trapezoid, add both bases together, divide that sum by 2, and multiply by the height. This is same as adding both bases together and multiplying by 1/2 the height. When calculating the area of a trapezoid, make sure the height is a line/altitude perpendicular to the base, or intersecting the base at a 90 degree angle.
How To Calculate The Area Of A Triangle
To find the area of a triangle, you multiply the base times the height times 1/2. This is the same as multiply ng the base times the height and dividing it by 2. When calculating the area of a triangle, make sure the height is a line/altitude perpendicular to the base, or intersecting the base at a 90 degree angle.
