I believe it’s b- it might not be correct I believe
Answer:
Base is 10, exponent is 15
Step-by-step explanation:
To the nearest place value of 2 would be 2000
so the whole number would be 12000
the given figure is a rhombus, so it's area =

where, d1 and d2 are diagonals of the rhombus,
and since, the diagnonals of rhombus bisects each other, the values of their diagonals are
(2 × x) and (2 × 15) =》2x and 30 respectively,
so, by finding the area using the given diagonals and equating it with the real area, we get :
=》

=》

=》

=》

so,
value of x = 10 units