Area And Perimeter

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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.


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