Area of Rhombus = [tex] \frac{(diagonal 1) * (diagonal 2)}{2} [/tex]
Diagonal DB = 2×8 = 16
To find AC, we substitute into the formula the area 168 in² and DB of 16 in
Area = [tex] \frac{DB*AC}{2} [/tex]
[tex]168= \frac{16*AC}{2} [/tex]
[tex]336=16*AC[/tex]
[tex]AC= \frac{336}{16}=21 [/tex] inches
Answer: B
