Answer:
875 ft²
Step-by-step explanation:
Given 2 similar figures with sides in the ratio a : b, then
ratio of areas = a² : b²
Here the ratio of sides = 5 : 25 = 1 : 5, thus
ratio of areas = 1² : 5² = 1 : 25
Thus the area of rectangle EFGH is 25 times the area of ABCD, that is
area = 35 × 25 = 875 ft²
