The area of a rhombus can be evaluated using the formula 1 half d sub 1 d sub 2 , where d sub 1 represents the measure of one of its diagonals and d sub 2 represents the measure of its other diagonal. When d sub 1 is a terminating decimal and d sub 2 is a repeating decimal, what can be concluded about the area of the rhombus?
Answer
A
The area is irrational because both diagonals are irrational.
B
The area is rational because the formula will multiply both rational diagonals and the fraction 1 half .
C
The area is irrational because the formula will multiply two decimals by a fraction.
D
The area is rational because the product of an irrational diagonal and rational diagonal will be multiplied by the rational fraction 1 half .