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STD 11 - rectangular cartensian co-ordinates — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - rectangular cartensian co-ordinates4 Marks
Question
A rectangle is divided into $16$ sub-rectangles as in the figure, the number in each sub-rectangle represents the area of that sub-rectangle. What is the area of the rectangle $K L M N$ ?
✓

Answer

d
(d)

Area of rectangles are

$a c=10$

$b c=4$

$b d=12$

$d e=15$

$e f=25$

$\therefore \frac{a c}{b c} \times \frac{b d}{d e} \times e f =\frac{10}{4} \times \frac{12}{15} \times 25$

$\Rightarrow a f =50$

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