Question

the length of a larger diagonal is twice the smaller .if the area is 36 CM square then the length of the smaller diagonal is
a. 5
b. 6
c. 10
d. 8​

Answer 1

answer would be b. 6

it's easy

$\frac{1}{2} \times d \times 2d = 36$

${d}^{2} = 36$

$d = 6$