geometry
posted by *** .
if ac=17 and bd=15 nd ab=11.2 what is the area of the rhombus

The area of a rhombus is half the product of the diagonals.
So, a = 1/2 * 17 * 15 = 127.5
the length of ab is redundant; specifying the diagonals takes care of that, since they are perpendicular and bisect each other.
Respond to this Question
Similar Questions

geometry
The sides of a rhombus with angle of 60° are 6 inches. Find the area of the rhombus. 
geometry
In the rhombus ABCD, AB=10 and AC=12. Find the area of the rhombus. I am confused about how to solve this problem. 
Geometry
Find the area of the rhombus: In rhombus ABCD, AB=11 and AC=13. Find the area of the rhombus. What should be done to find the values of the diagonals? 
Geometry
Find the area of the rhombus: In rhombus ABCD, AB=11 and AC=13. Find the area of the rhombus. What should be done to find the values of the diagonals? 
Geometry
Two sides of a rhombus form a 120º angle. The length of each side is 6 in. Explain how to find the area of the rhombus, and then calculate the area. Leave your answer in simplest radical form. 
Geometry
Two sides of a rhombus form a 120º angle. The length of each side is 6 in. Explain how to find the area of the rhombus, and then calculate the area. Leave your answer in simplest radical form. 
geometry
A rhombus has base angles of 60 and 120. The length of each side is 16. What is the area of the rhombus? 
maths
Rhombus ABCD is similar to rhombus BFDE.The area of rhombus ABCD is 24 and angle BAD=60 degrees .What is the area of rhombus BFDE? 
geometry
A rhombus has a diagonal with a length of 17 ft. and a side measurement of 9.5 ft. What is the area of the rhombus? 
Math (Geometry)
1. A rhombus has an area of 5 square meters and a length of 3 meters. In a similar rhombus, the length of a side is 9 meters. What is the area of the second rhombus?