The given figures are all rectangles. What number will come in place of question mark?
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24 cm²
Step-by-step explanation:
To find the breath and length of the orange rectangle =
For the red rectangle = 6 × 12 + ? = 144 cm² so 6 × 12 + 12 = 144 cm² and the green rectangle's breadth is 8 cm so 12 + 8 + ? = 24, ? = 24 - 20 = 4 cm this is the breadth.
Length = so we know that the area of the green rectangle is 80 cm² and the breadth is 8 cm so height will equal to 80 ÷ 8 = 10 cm and since the place below the orange rectangle is 4cm, the length of the orange rectangle = 10 cm - 4 cm = 6cm
Hence area = l x b = 4 x 6 = 24cm²
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