Question

Find the area of figure AOBCD from the given figure

1. 400 cm²
2. 300 cm²
3. 200 cm²
4. All of these
5. None of these
​

Answer 1

Answer:

1. 400 cm^2

Applied few basic fundas

Answer 2

Answer:

400 cm²

Step-by-step explanation:

Draw a line EC such that DC ⊥ EC

AECD is a rectangle and OEZB is yet another rectangle

now ar (AOBD) = ar(AECD) + ar(OEZB)

ar (AECD) = 60X5 = 300 cm²

ar (OEZB) = 50X2 = 100 cm²

ar(AOB) = 300 cm² + 100 cm² = 400 cm²