Find the area of a quadrilateral PQRS if it's diagonal QS is 7 cm and length of the perpendicular drawn from the vertices P and R on it, are 3 cm and 4 cm respectively.
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Answer:
24.5
Step-by-step explanation:
QS divides that into two triangles PQS and QRS with perpndiclr heights of 3 and 4cm and same base of 7cm
calculating and combining the areas of the two triangles by the formulae (1/2 * base * height) gives the answer.
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