Construct trapezium PQRS with the following measurements. Find also its area.
is parallel to
PQ = 8 cm, QR = 5 cm,RS = 6 cm,SP = 4 cm
Given. PQRS is a trapezium.
PQ = 8 cm, QR = 5 cm, RS = 6 cm and SP = 4 cm
Formula used. Area of trapezium = × height × sum of parallel sides
Area of trapezium = × height × (PQ + SR)
Steps of Construction
Step 1 : Draw a line PQ of 8cm
Step 2 : Mark a point E on PQ such that PE = 6cm and EQ = 2cm
Step 3 : Make arc of 5cm from point Q and 4cm from point E
Step 4 : Mark the intersecting point of both arcs to be R and join ER and RQ
Step 5 : Draw arcs of 6cm and 4cm from point R and P respectively
Step 6 : Mark the intersection point of both arcs as S join SP and RS
Step 8 : Draw a perpendicular on PQ from point R and name the intersection point as F
Area of trapezium = × height × (PQ + SR)
= × RF × (PQ + SR)
= × 3.8cm × (8cm + 6cm)
= 26.6cm2
Conclusion. Hence; Trapezium PQRS is constructed and its area is
26.6cm2