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WASSCE
The diagram shows a trianglar prism of length 7cm. the right-angled triangle PQR is a cross-sector of the prism |PR| = 5cm and |RQ| = 3cm. use the information to answer question
What is the area of the cross-section?
A.
4cm2
B.
6cm2
C.
15cm2
D.
20cm2
Answer: B
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