Enter 2 values below
A rectangle has width of 4 and perimeter of 28
Calculate the length and area
Perimeter of a rectangle
P = 2(l x w)
Multiply the 2 through
P = 2l + 2w
Subtracting 2w from each side
P - 2w = 2l
Divide each side by 2
| l = | P - 2w |
| 2 |
| l = | 28 - 2(4) |
| 2 |
| l = | 28 - 8 |
| 2 |
| l = | 20 |
| 2 |
l = 10
Calculate Area (A):
A = l x w
where l = length and w = width
Plug in l = 10 and w = 4
A = 10 x 4
A = 40
Calculate diagonal length
Diagonal = √l2 + w2
where l = length and w = width
Plug in l = 10 and w = 4
Diagonal = √102 + 42
Diagonal = √100 + 16
Diagonal = √116
Diagonal = 10.770329614269
Calculate the circumradius R:
| R = | √l2 + w2 |
| 2 |
| R = | √102 + 42 |
| 2 |
| R = | √100 + 16 |
| 2 |
| R = | √116 |
| 2 |
| R = | 10.770329614269 |
| 2 |
R = 5.3851648071345
| r = | 40 |
| 14 |
Calculate the inradius r:
| r = | lw |
| l + w |
| r = | (10)(4) |
| 10 + 4 |
| r = | 40 |
| 14 |
r = 2.8571428571429
Other Properties:
Faces = 1
Edges = 4
Vertices = 4
Final Answers
w = 4
P = 28
A = 40
Diagonal = 10.770329614269
R = 5.3851648071345
r = 2.8571428571429
Faces = 1
Edges = 4
Vertices = 4
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What is the Answer?
w = 4
P = 28
A = 40
Diagonal = 10.770329614269
R = 5.3851648071345
r = 2.8571428571429
Faces = 1
Edges = 4
Vertices = 4
How does the Rectangles and Parallelograms Calculator work?
Free Rectangles and Parallelograms Calculator - Solve for Area, Perimeter, length, and width of a rectangle or parallelogram and also calculates the diagonal length as well as the circumradius and inradius.
This calculator has 4 inputs.
What 2 formulas are used for the Rectangles and Parallelograms Calculator?
What 9 concepts are covered in the Rectangles and Parallelograms Calculator?
areaNumber of square units covering the shapecircumradiusa radius of the circle inside which the polygon can be inscribedinradiusa radius of an inscribed circle or spherelengththe measurement or extent of something from end to endparallelogram simple quadrilateral with two pairs of parallel sides.perimeterThe distance around a shape or objectrectanglea quadrilateral with four right anglesrectangles and parallelogramswidththe measurement or extent of something from side to side.Example calculations for the Rectangles and Parallelograms Calculator
Rectangles and Parallelograms Calculator Video
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