Question

the perimeter of a square is 30 c m what is the length of side​

Answer 1

Answer:

side=7.5cm

Step-by-step explanation:

p pf square=30cm

4×side=30

side=15/2

side=7.5cm

I hope it will be helpful for you!!

Answer 2

Step-by-step explanation:

Question :-

• Find the side of square whose perimeter is 30 cm.

To Find :-

• Side of square.

Solution :-

Given :

• Perimeter = 30 cm

By using the formula,

${\sf{\longrightarrow Perimeter\ of\ square\ =\ 4a}}$

Where,

• a = length of the side

According to the question, by using the formula, we get :

${\sf{\longrightarrow Perimeter\ of\ square\ =\ 4a}}$

${\sf{\longrightarrow 30\ =\ 4a}}$

${\sf{\longrightarrow \dfrac{30}{4}\ =\ a}}$

${\sf{\longrightarrow 7.5\ =\ a}}$

${\sf{\longrightarrow a\ =\ 7.5\ cm}}$

$\therefore$ Hence, side of square is 7.5 cm.

More To Know :-

$\begin{gathered}\boxed{\begin {minipage}{9cm}\\ \dag\quad \Large\underline{\bf Formulas\:of\:Areas:-}\\ \\ \star\sf Square=(side)^2\\ \\ \star\sf Rectangle=Length\times Breadth \\\\ \star\sf Triangle=\dfrac{1}{2}\times Breadth\times Height \\\\ \star \sf Scalene\triangle=\sqrt {s (s-a)(s-b)(s-c)}\\ \\ \star \sf Rhombus =\dfrac {1}{2}\times d_1\times d_2 \\\\ \star\sf Rhombus =\:\dfrac {1}{2}p\sqrt {4a^2-p^2}\\ \\ \star\sf Parallelogram =Breadth\times Height\\\\ \star\sf Trapezium =\dfrac {1}{2}(a+b)\times Height \\ \\ \star\sf Equilateral\:Triangle=\dfrac {\sqrt{3}}{4}(side)^2\end {minipage}}\end{gathered}$