The number of the bast is 119. Then the correct option is B.
What is the area of the trapezoid?
A trapezoid is a quadrilateral having two parallel sides and the other two non-parallel sides. The area of a trapezoid is the number of unit squares that can be fit into it and it is measured in square units.
The area of the trapezoid is calculated by the formula given below:-
A = ( a + b )/2 x h
Here a and b are the lengths of the two parallel sides and h is the height of the trapezoid.
Given that the bottom row of the pile has 20 bats, and the top row has 14 bats. Each row has 1 fewer bat than the row below so it will become a trapezoid with a = 14 and b = 20 and the height is 7.
The number of bats will be equal to the area of the trapezoid.
A =( a + b )/2 x h
A = ( 14 + 20 ) / 2 x (7)
A = 119 Bats
Hence, the correct option is B.
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