Question

Find the area of quadrilateral whose sides are AB=9cm BC=40cm CD=28cm DA=15cm and angle ABC=90 degree

Answer 1

Answer:

Step-by-step explanation:

∴area of first triangle = 1/2 × 9 × 40

= 180 cm²a

area of second triangle = 1/2 × 28 × 15

= 210 cm²

∴area of quadrilateral = 210 + 180 = 390 cm²

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