Find the volume of a pyramid with a square base, where the side length of the base is
18.5 in and the height of the pyramid is 10.9 in. Round your answer to the nearest
tenth of a cubic inch.

V = 1243.5  in³

Step-by-step explanation:

(see attached pic for reference)

The volume of a square pyramid is given as

V = (1/3) b²h,

where,

V = volume of square pyramid (we are asked to find this)

b = base length (given as 18.5 in)

h = height (given as 10.9 in)

Substituting the given values above into the equation:

V = (1/3) b²h

V = (1/3) (18.5)²(10.9)

V = 1243.5083

V = 1243.5  in³ (rounded to nearest tenth)

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this