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MATHEMATICS

JAMB 2020 - Question 23

Mathematics 2020 JAMB Past Questions - Question 23: In the figure, PQRS is a rectangle. If the shaded area is 72 sq. cm, find h.

Choose the most appropriate option for the gap .

In the figure, PQRS is a rectangle. If the shaded area is 72 sq. cm, find h.

A: 12cm

B: 10cm

C: 8cm

D: 5cm

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Correct Answer

Explanation

From the diagram, PQRS is a rectangleArea of shaded part = 72sq.cmBut 72 = 3h - 4 + 6h - 4 + 4h= 72 - 16h - 8= 16h - 72 + 8=16h = 80h = 80/16= 5cm