Question

$Make \: an \: equation \: for \: the \: perimeter \: of \: rectangle. \\ \: Solve \: it \: to \: find \: the \: value \: of \: x. \\ \: Also \: find \: the \: length \: and \: breadth \: of \: rectangle. \\ \: Also \: check \: the \: answer.$
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Answer 1

Step-by-step explanation:

Given: Figure attached in the question.

To find: Equation of perimeter of Rectangle

Solution:

As perimeter of Rectangle is

=2(Length+Breadth)

In the given figure

Length=(x+5)cm

Breadth:(x+3) cm

Perimeter= 2[(x+3)+(x+5)]

Solve and simplify

Equation of

Perimeter= 2(2x+8) cm...eq1

As given perimeter is 32 cm...eq2

Equate eq1 and eq2

$2(2x + 8) = 32 \\ \\ 2x + 8 = \frac{32}{2} \\ \\ 2x +8 = 16 \\ \\ 2x = 16 - 8 \\ \\ 2x = 8 \\ \\ x = \frac{8}{2} \\ \\x = 4$

Thus,

Value of x is 4.

Length of Rectangle= (x+5)=4+6=9 cm

Breadth of Rectangle=(x+3)=4+3=7 cm

Verification:

Perimeter=2(Length+Breadth)

=2(9+7)

=2×16

=32 cm

Hence verified.

Hope it helps you.

Answer 2

Answer:

answer :

The average kinetic energy of the molecules of the substance depends on its temperature (it is directly proportional to the temperature). Thus when a substance is heated, it gets warm and its temperature increases and so the average kinetic energy of the molecules increases

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