Answer:
correct option is d) 68 ft²
Explanation:
The area of square is calculated by formula A = a²,
Where 'a' is side of square
In provided figure, we can see right side of rectangle in which two sides are given , which shows this is rectangle
and rest length is 10-2=8ft of left side rectangle
with refrence of figure-2
now calculate the area of first rectangle
= (a1)² =8² =64 ft²
and the area of second rectangle
= (a2)² =2² =4 ft²
Total area of diagram is;
A =

A = 64 ft² +4 ft²
A = 68 ft²
Hence, correct option is d) 68 ft²