The best method depends on the accuracy required of your measurements. If you require accurate and precise results, use a scientific instrument that's specially designed to measure the area of leaves. E.g. AM300 Leaf Area Meter
LAD= [(LAI1 + LAI2)/2] x Number of days LAI is Leaf Area Index. That number is usually given, if not it can be found by Leaf Surface Area/Soil Surface Area.
The stomata on the underside of the leaf regulate transpiration. The leaf surface area helps to estimate the number of stomata, which could speed up or slow the rate of transpiration.
transpiration is the loss of water vapour from the leaves of the plant, therefore the bigger the surface area of the leaf, the more water vapour lost from the plant.
1 cm2= 100 mm2
to calculate the area of the front surface of a box you should
You need to:* Calculate the surface area * Calculate the volume * Divide the surface area by the volume
surface area divided by volume
To calculate the surface area of a shape find the area of each side, and then, add all of the areas together. The sum of the areas is the surface area.
You measure or calculate the surface area; you measure or calculate the volume and then you divide the first by the second. The surface areas and volumes will, obviously, depend on the shape.
It depends on the shape whose surface area you are interested in.
The surface area of a sphere = 4*pi*radius2
The same way you calculate the surface area of any other rectangle: Multiply the length of the wall by its height.