Question

Please help

Problem above
I am so confused with this assignment

Answer 1

Xhxjjxjxjxjxjjxjxjdjjdkdkkdkxkxk
The answer is four

Answer 2

replacing h by 4h, we have the new area is

b(4h)/2 = 4(bh/2)

so the area is increased by a factor of 4