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andreev551 [17]
3 years ago
7

the area of a rectangle is 600 cm2 and its breadth is two-third of its length find the length and breadth of the rectangle​

Business
1 answer:
alexandr1967 [171]3 years ago
8 0

Given:

Area of a rectangle is 600 \text{cm}^2.

Breadth is two-third of its length.

To find:

The length and breadth of the rectangle​ .

Solution:

Let x cm be the length of the rectangle.

Then, Breadth or width of the rectangle = \dfrac{2}{3}x cm

Area of a rectangle is

Area=Length \times Breadth

600=x \times \dfrac{2}{3}x

600=\dfrac{2}{3}x^2

Multiply both sides by 3.

1800=2x^2

Divide both sides by 2.

900=x^2

Taking square root on both sides.

\pm \sqrt{900}=x

\pm 30=x

Length cannot be negative. So, x=30.

Now,

Length = 30\text{ cm}

Breadth = \dfrac{2}{3}\times 30\text{ cm}

             = 2\times 10\text{ cm}

             = 20\text{ cm}

Therefore, the length of the rectangle is 30 cm and the breadth is 20 cm.

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Projected sales in units        30,000        50,000      40,000

Per unit data: Selling price     $40              $20            $30

Direct materials                        $8                 $4              $8

Direct labor                             $15                 $3              $9

Setup hours                              30                 25             40

Inspection hours                    900             1,000           800

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