Posted by Anna on Tuesday, February 26, 2008 at 10:02pm.
The diagonals of a rhombus have lenghts 16 and 30. Find the perimeter of the rhombus.

math  drwls, Tuesday, February 26, 2008 at 10:15pm
The sides, which are equal since it is a rhombus, have a length dimension of sqrt (8^2 + 15^2) = sqrt(289) = 17, because the diagonals are perpendicular. The perimeter is therefore 4x17 = 68

math  drwls, Wednesday, February 27, 2008 at 10:23am
I am applying the Pythagorean theorem
a^2 + b^2 = c^2
c is the length of a side
a and b are half the lengths of the two diagonals. Draw yourself a picture with intersetinc diagonals and you will see the four congruent right triangles. Make sure you do it for a rhombus, which is a parallelogram with all sides equal.
Answer This Question
Related Questions
 Math  Which of the following statements is not always true? A. In a rhombus, ...
 geometry  Which of the following statements is not always true? A. In a rhombus...
 maths  The diagonals of a rhombus are in the ratio 3:4. If its perimeter is 40 ...
 Maths  The diagonals of a rhombus are in the ratio 3:4. If its perimeter is 40 ...
 geometry  The diagonals of a rhombus are in 2:1. If the perimeter of the ...
 easy GEOMETRY!!  1.The perimeter of parallelogram QUAD is 10 more than 5 times ...
 geometry  1.The perimeter of parallelogram QUAD is 10 more than 5 times AU. If ...
 math PLEASE HELP  1. A rhombus has a perimeter of 96, and the length of one of ...
 math  The area of a rhombus is 60cm^2. Given that one of its diagonals is 15 cm...
 maths  the length of the diagonals of a rhombus are 24cm and 32cm. the ...
More Related Questions