# geometry

posted by .

a rhombus has an area of 165 square units. Of the lenght of one of its diagonals is 15 units, find the lenght of its other diagonal

I tried DR Russ
I didn't come up with answer of 22 units
could you give more direction

• geometry -

Think of the rhombus as a rectangle where the lines joining the mid-points are the diagonals of the rhombus.

The area of a rhombus is therefore half of product of its diagonals.
So 15*D/2=165.
Solve for D.

• geometry -

A Area

AC and BD diagonals

A=AC*BD/2

165=15*BD/2

2*165=15*BD

330=15*BD Divide with 15

BD=330/15=22

go to wikipedia and type rhombus

## Similar Questions

1. ### Geometry

A kite has an area of 32. One diagonal is 4 times the other one. The endpoints of one of the diagonals (one of the vertices of the kite) is (3,6). Find other three possibilites for the other three vertices of the kite. Can someone …
2. ### math

The shorter diagonal of a rhombus is 10 inches long, and the angle the diagonal forms with the side measures 60ยบ. Find the area of the rhombus. I really don't know where to start. I know that the area formula for a rhombus is A=1/2*d1*d2 …
3. ### math

the lenght of the hypotenuse of a right triangle is 4cm. the lenght of one leg iz 2m. find the lenght of the other leg.?
4. ### Geometry

a rhombus has an area of 165 square units. Of the lenght of one of its diagonals is 15 units, find the lenght of its other diagonal
5. ### Geometry

Area of trapezoid is 80 square units, height is 8 units. What is the lenght of median ?

A piece of wire 168cm. long is to be cut into two pieces, each to be bent to make a square. The lenght of a side of one square is to be 2cm. greater than the lenght of aside of the other. What is the area of the smaller square?
7. ### Geometry

Diagonals of quadrilateral ABCD intersect at O.If area of triangle ACB is 5 sq.units,area of triangle BCD is 9 sq.units,area of triangle CDA is 10 sq.units and area of triangle DAB is 6 sq.units,Find area of triangle AOB. Im begging …
8. ### Maths

The area of rhombus is 148.8 square cm.if one of its diagonal is 19.2 cm,find the length of the other diagonals.
9. ### math

the lenghts of the diagonals of a rhombus are 16cm and 12cm respectively.find the lenght of each of the sides
10. ### Geometry

Find the dimensions of a rectangular solid for which the sum of all the edges is 76, the total surface area is 206 square units, and the volume is 165 cubic units.

More Similar Questions