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Metric Concrete Volume Calculator for Pentagon Slabs

Spike VM Diagram of a regular pentagon concrete slab showing flat width and depth.

Calculate the amount of concrete needed for a slab in the shape of a pentagon using metres for the side length and millimetres for the slab thickness (depth). This calculator is for calculating the volume of a regular pentagon. In a regular pentagon-shaped slab, all sides are equal in length, and each interior angle is 108°.


Need feet and inches? Use the Pentagon Concrete Calculator - Imperial.

Additional metric-based calculators:

Pentagon Shaped Volume Calculator - Metric

Length of Side:   m
Depth:   mm

Amount of concrete needed:

Area:   m ²
Perimeter:   l.m
Cubic Metres:   m ³
Cubic Yards:   yd ³
Cubic Feet:   ft ³

Calculator

  1. enter the length of one of the sides in metres
  2. the slab thickness in millimetres

Results

  1. the area of the slab in square metres
  2. the perimeter of the slab in lineal metres for forming material
  3. the amount of concrete needed for pouring the slab in cubic metres
  4. the amount of concrete in cubic yards
  5. the amount of concrete in cubic feet

When Ordering Concrete

This concrete calculator will help you in estimating the amount of concrete needed for your project. The amount given as needed, does not include any waste. It is recommended, depending on the job you are doing, to add anywhere from an extra 4% to 10% to your concrete order to make sure you have enough concrete to finish the job. Ask when ordering the concrete. They will be able to give you a good idea of what is needed.

Concrete Volume Calculators

Estimate the amount of ready-mix concrete needed.
Imperial
Metric
Shapes using Imperial & Metric Measurements
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