Engineering Board Exam Reviewer · Quadrilaterals · easy

Find the length of the diagonal of a rectangle with sides 9 cm and 12 cm.

  1. 15 cm
  2. 21 cm
  3. 13 cm
  4. 18 cm

Answer

A. 15 cm

Solution

sqrt(92+122)=sqrt(225)=15 cm.

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  1. A parallelogram has sides of 10 cm and 14 cm, with an included angle of 60°. Find its area.
  2. Find the sum of the interior angles of any quadrilateral.
  3. A cyclic quadrilateral has sides 5, 6, 7, and 8. Using Brahmagupta's formula, find its area.
  4. An isosceles trapezoid has bases 10 and 24 and legs of length 13. Find its area.
  5. A rectangle has a perimeter of 34 and a diagonal of 13. Find its area.
  6. A rhombus has an area of 96 and one diagonal of 12. Find its perimeter.
  7. Two adjacent sides of a parallelogram are 8 and 12, and the angle between them is 30°. Find its area.
  8. Find the area of a trapezoid with parallel sides 8 and 14 and a height of 6.
  9. The diagonals of a rhombus are 10 and 24. Find the length of its side.
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