Question

The floor of a rectangular room is 10 m long and 9 m wide. Find the cost of carpeting the
floor if 1 square metre of carpet costs Rs 5.​

Answer 1

AnswEr :

⋆ Refrence of Image is in the Diagram :

$\setlength{\unitlength}{1.5cm}\begin{picture}(8,2)\thicklines\put(7.7,3){\large{A}}\put(7.3,2){\mathsf{\large{9 m}}}\put(7.7,1){\large{B}}\put(9.2,0.7){\matsf{\large{10 m}}}\put(11.1,1){\large{C}}\put(8,1){\line(1,0){3}}\put(8,1){\line(0,2){2}}\put(11,1){\line(0,3){2}}\put(8,3){\line(3,0){3}}\put(11.1,3){\large{D}}\end{picture}$

$\rule{150}{1}$

$\underline{\bigstar\:\textsf{According to the Question Now :}}$

$:\implies\tt Cost = Area\:of\: Room \times Rate\\\\\\:\implies\tt Cost = (Length \times Breadth) \times Rate\\\\\\:\implies\tt Cost = (10 \:m \times 9 \:m) \times Rs.\:5 \:m^{-2}\\\\\\:\implies\tt Cost = 90 \:\cancel{m^2} \times Rs. \:5 \:\cancel{m^{-2}}\\\\\\:\implies\tt Cost = 90 \times Rs. \:5\\\\\\:\implies\boxed{\tt Cost = Rs. \:450}$

⠀

$\therefore\:\underline{\textsf{Cost of carpeting of Room is \textbf{Rs. 450}}}$

Answer 2

QUESTION:-

➽ The floor of a rectangular room is 10 m long and 9 m wide. Find the cost of carpeting the floor if 1 square metre of carpet costs Rs 5.

GIVEN:-

➽L=10m

➽b=9m

➽ rate=Rs.5m-².

SOLUTION:-

➽rectangular room area= l × b

=10×9

=90m².

➽ cost = rectangular room area ×rate

= 90m²× 5m-²

➽ cost= Rs.450

.°.the cost of carpeting of room is Rs.450.