# How to Calculate Diagonal Length and Width?

Using geometry allows you to find the length of the diagonals in a rectangle or square without measuring. A diagonal reaches from one corner of the shape to the corner farthest from it. A rectangle...
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http://www.ehow.com/how_8142384_calculate-diagonal-length-width.html

## How to Calculate the Width of a Rectangle Using the Diagonal?

To calculate the width of a rectangle using the diagonal you need to use the Pythagorean Theorem. The diagonal will cut the rectangle into two triangles. The Pythagorean Theorem is the formula "A" ...
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http://www.ehow.com/how_6821869_calculate-width-rectangle-using-diagonal.html

## If the width of a photograph is 4 cm more than three tenths of the length and if the width is 13Cm find the length?

Width 13, minus 4 is 9 which is 3/10 so length is 90/3 ie 30cm.

http://wiki.answers.com/Q/If_the_width_of_a_photograph_is_4_cm_more_than_three_tenths_o...

## How do you find the area of a rectangle whose leng2The width of a photograph is 4 cm more than three tenths of the length If the width is 13 cm find the length?

4 x 13 = 52cm2 Length x Width = Area

http://wiki.answers.com/Q/How_do_you_find_the_area_of_a_rectangle_whose_leng2The_width_...

## The width of a photograph is 4 cm more than three tenths of the length. If the width is 13 cm what is the length?

13 = 4 + 3/10L3/10L = 9L = 30cm

http://wiki.answers.com/Q/The_width_of_a_photograph_is_4_cm_more_than_three_tenths_of_t...