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### Grade 7 - Mathematics9.18 Perimeter of a Quadrilateral

 Example: The sides of a quadrilateral ABCD are 5 cm, 6 cm, 9 cm and 8 cm. Find its perimeter. Solution: Perimeter of the Quadrilateral (P) = S1 + S2 + S3 + S4 Where P is the perimeter of the quadrilateral and S1, S2, S3 and S4 are the sides of the quadrilateral. Given that, S1 = 5 cm, S2 = 6 cm, S3 = 9 cm and S4 = 8 cm. Hence P = 5 + 6 + 9 + 8 P = 28 cm. Directions: Read the above example carefully and answer the following questions. Also draw 10 different quadrilaterals and find their perimeters.
 Q 1: The sides of a quadrilateral ABCD are 5 cm, 7 cm and 9 cm. Find the remaining side if its perimeter is given by 32 cm.11 cm12 cm15 cm13 cm Q 2: The sides of a quadrilateral ABCD are 2564 cm, 1235 cm, x cm and 1250 cm. Find x if its perimeter is given by 6618 cm.1569 cm1238 cm1548 cm1258 cm Q 3: The sides of a quadrilateral ABCD are 16.23 cm, 19.56 cm and 28.35 cm. Find the remaining side if its perimeter is given by 76.68 cm .19.23 cm16.13 cm12.54 cm17.25 cm Q 4: The sides of a quadrilateral ABCD are 8 cm, 4 cm, 9 cm and 6 cm. Find its perimeter.27 cm19 cm15 cm17 cm Q 5: The sides of a quadrilateral ABCD are 9y cm, 8y cm, 7y cm and 6y cm. Find y if its perimeter is given by 90 cm.6 cm3 cm5 cm2 cm Q 6: The sides of a quadrilateral ABCD are (7x9x5) cm, (9x5x6) cm, (5x6x2) cm and (12x5x6) cm. Find its perimeter.1562 cm1005 cm1125 cm1236 cm Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!

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