Top and Bottom both faces have all sides are different lengths and height is constant.

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## AdityaBhandakkar

Consider them as two triangles jointed.

Calculate the volume of each triangle prism and then make the addition.

It gives an accurate result.

Volume of triangular prism= 0.5 * b* h * lb= base

h= height

l = slant height.

## Komal Bhandakkar

This answer was edited.Place bricks on one top of the other around the concrete shape you want to find its volume.

First, choose a rectangular shape around the object and then going to the object.

Then place a sufficiently large sheet of polythene in the space around the concrete object for covering the mold.

Then take a standard bucket of 25-liter capacity and then slightly pour water within the polythene most do formed. Keep a count of the buckets of water poured till it overflows at the top of the brick wall.

Measure the inside dimension and depth of the rectangular moat.

## keralitecivilengineer

Here a prism with triangular areas are given. Yours is quadrilateral areas. Hence Sb1 and Sb2 will be area of quadrilaterals

Now to find area of quadrilaterals, you need more measurement – either one diagonal or two angles.

If you know diagonal, then use the below link to find the area using diagonal

https://www.vcalc.com/wiki/vCalc/Quadrilateral+Area+(with+diagonal)

If you know the angles, then use the below link to find the area using diagonal

https://www.vcalc.com/wiki/vCalc/Quadrilateral+-+area

## Gopal Mishra

Your question is not clear, it will be better if you provide more details and attach an image of that.

## talha