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Please help need to get this done​

Please help need to get this done​-example-1
User Chapskev
by
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1 Answer

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Answer:

B

Explanation:

ABCD is a trapezium with area (A) calculated as

A =
(1)/(2) AD(AB + CD)

Calculate AD using right triangle ABD

Area of ΔABD = 0.5 × AD × AB = 280, that is

0.5 × AD × 16 = 280

8AD = 280 ( divide both sides by 8 )

AD = 35

Thus the area of trapezium ABCD is

A =
(1)/(2) × 35(16 + 20)

=
(1)/(2) × 35 × 36 = 18 × 35 = 630 → B

User Jatin Dave
by
8.1k points

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