Question

what is the cost of a rectangular board of length 13cm and breadth 19cm at the rate of rs 9per 100sq​

Answer 1

Step-by-step explanation:

area =19×13=247cm^2

cost of rectangular board=9×247=2223

hope this helps you

Answer 2

Answer:

here's your step wise explanation...

Step-by-step explanation:

The cost of painting rectangular cardboard is Rs 675.

Step-by-step explanation:

We are given that the cost of painting rectangular cardboard at a rate of 10 Paisa per square cm.

Also, the length and breadth of the cardboard are 90 cm and (3/4) m respectively.

Let the length of the cardboard = L = 90 cm

and the breadth of the cardboard = B = \frac{3}{4} \text{ m}43 m = (\frac{3}{4}\times 100) \text{ cm}(43×100) cm

                                                               = (3 \times× 25) = 75 cm

Now, the area of the rectangular cardboard = Length \times× Breadth

            Area  =  L \times× B

                      =  90 cm \times× 75 cm = 6750 \text{cm}^{2}cm2

Cost of painting 1 \text{cm}^{2}cm2 of rectangular cardboard = 10 paise

Cost of painting 6750 \text{cm}^{2}cm2 of rectangular cardboard = (6750 \times× 10) paise

                                                                               = 67500 paise

Converting paise to rupees we get;

         1 paise = \text{Rs }\frac{1}{100}Rs 1001  

         6750 paise = Rs \frac{67500}{100}10067500  = Rs 675.

Hence, the cost of painting a rectangular cardboard is Rs 675.