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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
3.25 Area of Quadrilateral

Example:
The length of diagonal is 10 cm. and the heights of perpendicular sides are 6 cm. and 7 cm. respectively. Find the area of quadrilateral.
Solution:
The area of the quadrilateral = 1/2 * d(h1+h2)
Given that,
d = 10cm., h1 = 6cm. and h2 = 7 cm.
A = 1/2 * 10(6+7)
A = 5 (13)
A = 65 Sq.cm.

Directions: Solve the following problems. Also write at least ten examples of your own.
Q 1: The length of diagonal is 15 cm. and the heights of perpendicular sides are 7.5 cm. and 4.6 cm. respectively. Find the area of quadrilateral.
90.25 Sq.cm.
90 Sq.cm.
90.5 Sq.cm.
90.75 Sq.cm.

Q 2: The length of diagonal is 23 cm. and the heights of perpendicular sides are 7.8 cm. and 9.5 cm. respectively. Find the area of quadrilateral.
198.45 Sq.cm.
198.75 Sq.cm.
198.95 Sq.cm.
198.65 Sq.cm.

Q 3: The length of diagonal is 19 cm. and the heights of perpendicular sides are 7.6 cm. and 5.8 cm. respectively. Find the area of quadrilateral.
127.5 Sq.cm.
127.9 Sq.cm.
127.3 Sq.cm.
127.7 Sq.cm.

Q 4: The length of diagonal is 18 cm. and the heights of perpendicular sides are 5.6 cm. and 9.4 cm. respectively. Find the area of quadrilateral.
135.5 Sq.cm.
135.75 Sq.cm.
135.25 Sq.cm.
135 Sq.cm.

Q 5: The length of diagonal is 16 cm. and the heights of perpendicular sides are 8.4 cm. and 9.5 cm. respectively. Find the area of quadrilateral.
None of these
143.5 Sq.cm.
143.2 Sq.cm.
143 Sq.cm.

Q 6: The length of diagonal is 25 cm. and the heights of perpendicular sides are 15.6 cm. and 9.4 cm. respectively. Find the area of quadrilateral.
312.25 Sq.cm.
312.75 Sq.cm.
312.5 Sq.cm.
312 Sq.cm.

Q 7: The length of diagonal is 16 cm. and the heights of perpendicular sides are 8.6 cm. and 10.9 cm. respectively. Find the area of quadrilateral.
156.75 Sq.cm.
156.5 Sq.cm.
156.25 Sq.cm.
156 Sq.cm.

Q 8: The length of diagonal is 8 cm. and the heights of perpendicular sides are 7.4 cm. and 9.7 cm. respectively. Find the area of quadrilateral.
68.46 Sq.cm.
68.4 Sq.cm.
68.6 Sq.cm.
68.8 Sq.cm.

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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