how to find the perimeter of an unknown side?
431242
To find the missing side length, write an addition sentence for the perimeter of the triangle. The perimeter of a triangle equals the sum of all of its side lengths. Add the lengths of the sides you know. Find the side length that makes the addition sentence true.
110482
['perimeter =AB+AC+BC.', '⇒AB=6−2=4.', '⇒BC=3−(−3)=6.']
698278
['For a square with side length s , the following formulas are used.', 'Perimeter = 4s.', 'Area = s2.', 'Diagonal = s√2.', 'For a circle with radius r , the following formulas are used.', 'Circumference = 2πr.', 'Area = πr2.']
311656
Since every rectangle has four sides, if you know the perimeter, divide it by four to find the length of each side. Then find the area by multiplying the length times the width. If you know the area and want to find the minimum perimeter possible, take the square root of the area to find the length of each side.
700787
Remember that perimeter is the measure of the outer edge of a shape, or otherwise, the sum of the measures of the sides of the trapezoid. Representing the perimeter by P, and the sides as a, b, c and d, our formula is P= a + b + c + d.
1464774
In order to find the perimeter of a square from the area find what number multiplied by itself gives you the area of the square. then you multiply that number by 4 to get the perimeter because all sides of a square are the same length.
1236267
['In the given triangle, a, b and c are the sides of the triangle. Perimeter of a triangle.', 'Perimeter of triangle = a + b + c. ... ', 'Here, sides of the triangle are AB = 3 cm, BC = 4 cm and AC = 3 cm. ... ', 'Perimeter of an isosceles triangle = a + b + c. ... ', 'Perimeter of an equilateral triangle = a + b + c.']
1353294
We may be asked to find the perimeter of a compound shape like the one above. To find the perimeter, we simply add up the lengths of each outside edge. It may be helpful to look out for number bonds when adding the sides. For example, 7 + 3 = 10.
15982
To find the perimeter of a shape, measure each of the sides and add them all together. To find the area of a square, rectangle, or other parallelograms, multiply the length by the width.
31235
The formula for the perimeter of a rectangle is often written as P = 2l + 2w, where l is the length of the rectangle and w is the width of the rectangle. The area of a two-dimensional figure describes the amount of surface the shape covers. You measure area in square units of a fixed size.
450522
By the Pythagorean theorem, we find that each of the sides of the rhombus is √([7.5)² + (4)²] = √[56.25 + 16] = √72.25 = 8.5 cm. The perimeter of the rhombus is four times the length of one side: 34 cm.
967994
['The shaded shape on the grid is a rectangle. Its length is 4 units and width is 3 units.', 'Perimeter of the shaded shape = 3 + 4 + 3 + 4 = 14 units.', 'Area of the shaded shape = length × width. = 4 × 3 = 12 square units. Problem 2. Find the perimeter and area of the shaded shape on the grid.']
119049
To find the perimeter of a rectangle, add the lengths of the rectangle's four sides. If you have only the width and the height, then you can easily find all four sides (two sides are each equal to the height and the other two sides are equal to the width). Multiply both the height and width by two and add the results.
300410
The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. The perimeter, P, is: P=x+x+y+y.
456455
['The perimeter of a shape is the length around the outside of that shape. ... ', 'A triangle has three sides, a, b, and c. ... ', 'P = a + b + c.', 'P = 3 + 4 + 5 P = 12.', "The Pythagorean Theorem is a formula that shows the relationship between the lengths of a right triangle's sides.", 'a^2 + b^2 = c^2.']
212538
Explanation: To find the width, multiply the length that you have been given by 2, and subtract the result from the perimeter. You now have the total length for the remaining 2 sides. This number divided by 2 is the width.
1365225
['If it is a square, the sides would be approximately 209 fet long and you would need 4. ... ', 'If it is a circle then the perimeter is 740 feet.']