Answer:
Therefore the Dimensions of Building are

Explanation:
Given:
Let the length of the Base be ' L '
and Width of the Base is 'W'
According to given Condition

Perimeter = 870 ft
To Find:
L = ?
W = ?
Solution:
Perimeter of Rectangle base is given as

Substitute 'L' and Perimeter we get

Substitute 'W' in L we get

Therefore the Dimensions of Building are
