Question

Please help me with this.

Answer 1

$\color{blue}\underline{\mathfrak{\huge{Answer}}}\\ let \: length \: of \: rectangle = l \: cm \\ breadth \: of \: rectangle (b) = \frac{1}{3} \times 18 \\ = 6cm \\ area \: of \: square + area \: of \: rectangle = 384 \: {cm}^{2} \\ {(side)}^{2} + l \times b = 384\\ {(18)}^{2} + l \times 6 = 384 \\ 324 + 6l = 384 \\ 6l = 384 - 324 \\ 6l = 60 \\ \boxed{ \boxed{l = 10cm}} \\ \\ \color{blue}\rightarrow (c)\:is\:correct \\ \\ \red{\mathfrak{ \large{\underline{{Hope \: It \: Helps \: You}}}}} \\ \blue{\mathfrak{ \large{\underline{{Mark \: Me \: Brainliest}}}}}$

Answer 2

Answer:

( c) 10 cm

Step-by-step explanation:

the side of a square is 18 cm

the breadth of a rectangle is (1/3)rd the length of the edge of tje square

=> (1/3) × side of the square

=> [ (1/3) ×18 ] cm

=> 6 cm

the breadth of the rectangle is => 6 cm

the area of the whole figure is => 384 cm²

the area of a square + the area of a rectangle => 384 cm²

(18 × 18 ) + (length of rec. ×6 ) => 384

length of rectangle => ( 384 – 324 ) /6

length of rectangle => 10 cm ans