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Since a diagonal divides a rectangle into two triangles, this is actually a problem in trigonometery. Since a rectangle has right angles, the resulting triangles also have right angles, therefore you can apply the Pythagorean Theorem. Or, just take your ruler and measure the diagonal. That's the direct approach.
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Earn +20 ptsQ: How do you calcuate the diagonal of a rectangle?
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What is the diagonal if a rectangle is 9 x 12?
A 9 x 12 rectangle has a diagonal of 15.
Does the diagonal of a rectangle have to be perpendicular?
yes if you want it to be a rectangle
If a rectangle is 9cm by 11cm how long is the diagonal?
The diagonal is 14.21 cm
What is the diagonal of a rectangle with width 10cm and length 24cm?
The diagonal is 26cm
Is a diagonal line through a rectangle equal to the vertical and horizontal sides?
No. The diagonal through a rectangle can be computed via the Pythagorean theorem: c2 = a2 + b2 where c is the diagonal length and a and b are the horizontal and vertical lengths of the rectangle.
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