The area of the leaf is approximately 10 in².
How to estimate the area of the leaf.
The estimated area is an approximation or calculation of the size or extent of a particular space or region. It is often derived through measurements, mathematical models, or statistical methods to provide a close approximation of the actual area.
Given
A leaf with approximate shape of a triangle.
The lateral vein of the leaf represents the height of the leaf which corresponds height of the triangle.
Area of a triangle = 1/2bh
where
b is base
h is height
h = 5 in
b = 4 in
Area = 1/2*5*4
A = 5*2
A = 10 in²
Therefore, the area of the leaf is approximately 10 in².