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## Math - Geometry Lesson Plans : Perimeter & Area of Quadrilaterals I

Mensuration - Solve each exercise problem related to perimeter and area of quadrilaterals given below.

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 1. Find the area (in cm2) of a parallelogram whose base is 42 cm and height is 9 cm. .fixedToBottom { position:fixed; _position:absolute; right:0; bottom:2; _top:expression(document.body.scrollTop+document.body.clientHeight-this.clientHeight - 256); } Hint 2. If two adjacent sides of a parallelogram are 10 cm and 20 cm and the distance between the shorter sides is 16 cm, calculate the distance (in cm) between the longer sides. Hint 3. If the perimeter of a rhombus is 68 cm, calculate its area (in cm2) given that its one diagonal is 30 cm. Hint 4. The area of a quadrilateral is 1512 m2. The lengths of the perpendiculars from the opposite vertices to a diagonal are 14.6 m and 12.4 m respectively. What is the length (in m) of this diagonal? Hint 5. The diagonals of a quadrilateral intersect at right angles. The lengths of the diagonals are 16 cm and 13 cm respectively. Calculate the area (in cm2) of the quadrilateral. Hint 6. Find the perimeter (in cm) of a rhombus whose diagonals are 36 cm and 48 cm. Hint 7. If the area of a trapezoid is 243 m2 and its parallel sides are 15 m and 12 m, find the distance (in m) between them. Hint

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