In the figure, PQST is a parallelogram and TSR is a straight line. If the area of \( \triangle \)QRS is 20cm2, find the area of the trapezium PQRT.

Assessment: JAMB UTME - Mathematics - 1998 Subject: General Mathematics

Question 1 Report

In the figure, PQST is a parallelogram and TSR is a straight line. If the area of \( \triangle \)QRS is 20cm2, find the area of the trapezium PQRT.

Answer Details
A △  =  1 2  x 8 x h = 20

=  1 2  x 8 x h = 4h

h =  20 4

= 5cm

A △ (PQTS) = L x H

A △ PQRT = A △ QSR + A △ PQTS

20 + 50 = 70cm2

ALTERNATIVE METHOD

A △ PQRT =  1 2  x 5 x 28

= 70cm2

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