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

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSrectangular cartensian co-ordinates1 Mark
MCQ
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 $K L M N$ ?
  • A
    $20$
  • B
    $30$
  • C
    $40$
  • ✓
    $50$
✓

Answer

Correct option: D.
$50$
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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