Enter 2 values below
A rectangle has length x width of 4 x 3
Calculate the perimeter and area
Calculate Area (A):
A = l x w
where l = length and w = width
Plug in l = 4 and w = 3
A = 4 x 3
A = 12
Calculate Perimeter (P):
P = 2(l + w)
where l = length and w = width
Plug in l = 4 and w = 3
P = 2 * (4 + 3)
P = 2 * 7
P = 14
Calculate diagonal length
Diagonal = √l2 + w2
where l = length and w = width
Plug in l = 4 and w = 3
Diagonal = √42 + 32
Diagonal = √16 + 9
Diagonal = √25
Diagonal = 5
Calculate the circumradius R:
| R = | √l2 + w2 |
| 2 |
| R = | √42 + 32 |
| 2 |
| R = | √16 + 9 |
| 2 |
| R = | √25 |
| 2 |
| R = | 5 |
| 2 |
R = 2.5
| r = | 12 |
| 7 |
Calculate the inradius r:
| r = | lw |
| l + w |
| r = | (4)(3) |
| 4 + 3 |
| r = | 12 |
| 7 |
r = 1.7142857142857
Other Properties:
Faces = 1
Edges = 4
Vertices = 4
Final Answers
l = 4
w = 3
A = 12
P = 14
Diagonal = 5
R = 2.5
r = 1.7142857142857
Faces = 1
Edges = 4
Vertices = 4
w = 3
A = 12
P = 14
Diagonal = 5
R = 2.5
r = 1.7142857142857
Faces = 1
Edges = 4
Vertices = 4
Keep Practicing
Common Core State Standards In This Lesson
4.MD.A.3
What is the Answer?
l = 4
w = 3
A = 12
P = 14
Diagonal = 5
R = 2.5
r = 1.7142857142857
Faces = 1
Edges = 4
Vertices = 4
w = 3
A = 12
P = 14
Diagonal = 5
R = 2.5
r = 1.7142857142857
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.
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?
- area
- Number of square units covering the shape
- circumradius
- a radius of the circle inside which the polygon can be inscribed
- inradius
- a radius of an inscribed circle or sphere
- length
- the measurement or extent of something from end to end
- parallelogram
- simple quadrilateral with two pairs of parallel sides.
- perimeter
- The distance around a shape or object
- rectangle
- a quadrilateral with four right angles
- rectangles and parallelograms
- width
- the measurement or extent of something from side to side.
Example calculations for the Rectangles and Parallelograms Calculator
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