Iwill give brainlist if you get it right

A rhombus is a parallelogram that has all its sides equal in length. the area for a rhombus is A = B * H or you can also use A = d1 * d2/ 2

so step one find your base and your height.

step two - your height is 4.5 and your base is 5

step three - multiply them together.

step 4 - 5 * 4.5

step five - your answer is 22.5

hope this helps, good luck on the assignment.