**How Do You Calculate The Size Of An
Irregular Plot? Plot Area Calculation**

In this article, let's look at some irregular shapes of
land or plot area, and calculate the area of those areas using mathematical
formulas.

**Example -1:**

To find the area of the plot for given below shape

**Solution:**

**Method - 1:**

The area of plot can find out by using the trapezoidal
area formula

**Therefore:**

Area = 1/2 x [ a+ b ] x h

Area = 0.5 x [25+ 35] x 18

**Area
= 540 sqft ^{}**

** **

**Method - 2:**

Area of plot can be found out by using thumb rule

**Therefore:** Dividing
area in to parts

A1 = Area-1 = 0.5 x 5 x 18 = 45.0 Ft^{2}

A2 = Area-2 = 25 x 18 = 450 Ft^{2}

A3 = Area-3 = 0.5 x 5 x 18 = 45.0 Ft^{2}

**Total
area of plot = 540.0 sqft**

**Example
-2:**

To Find the area of the plot for given below shape

**Solution:**

Area of plot can be found out by using thumb rule

**Therefore:** Dividing
area in to parts

A1 = Area-1 = 50 x 42 = 2100 sqft

A2 = Area-2 = 0.5 x 8 x 12 = 28 sqft

A3 = Area-3 = 30 x 5 = 150 sqft

**Total
area of plot = 2278 sqft**

**Example
- 3:**

To Find area of plot for given below shape

**Solution:**

Area of plot can be found out by using thumb rule

**Solution:**

Area of plot can be found out by using thumb rule i.e.
dividing area in to parts

A1 = Area-1 = 0.5 X 32 X 45 = 720 sqft

A2 = Area-2 = √S(S-A) (S-B) (S-C)

**where,**

S = (a + b + c )/2

To find **‘c’**

By pythogorous theorem

C = √(a^{2} + b^{2})

C = √(32^{2} + 45^{2})

C= 55.21

**Therefore,**

S = (85.50 + 80.50 + 55.21) / 2

S = 110.605

A2 = Area-2 = √ (110.605 (110.605-85.50) (110.605-80.50)
(110.605-55.21))

A2 = Area-2 = **2151.90
sqft**

**Total
area of plot** = A1 + A2 = **2871.90 sqft**

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