Question

The perimeter of a circle is 176 cm, find its radius​

Answer 1

Answer:

$2 \: \pi \: r \: = 176cm \\ \\ 2 \times \frac{22}{7} \times r = 176cm \\ \\= \frac{44}{7} \: \times \: r = 176 \\ \\ = 44 \: \times \: r \: = \: 176 \times 7 \\ \\ = 44 \times r = 1232 \\ \\ r = \frac{1232}{44} \\ \\ r = 28$

Hope you understood

Answer 2

$\huge{\bf{\green{\mathfrak{Question:-}}}}$

$\bullet{\mapsto}$ The perimeter of a circle is 176 cm, find its radius.

$\huge {\bf{\orange{\mathfrak{Answer:-}}}}$

$\bullet{\leadsto} \: \textsf{Perimeter of the circle = 176 cm.}$

$\bullet{\leadsto} \: \textsf{We know that,}$

$\bullet{\leadsto} \: \sf Circumference \: of \: a \: circle \: = \: 2 \pi r.$

$\bullet{\leadsto} \: \sf 176 \: = \: 2 \pi r$

$\bullet{\leadsto} \: \sf \dfrac{176}{2} \: = \: \pi r$

$\bullet{\leadsto} \: \sf 88 \: = \: \dfrac{22}{7} \: * \: r$

$\bullet{\leadsto} \: \sf 88 \: * \: \dfrac{7}{22} \: = \: r$

$\bullet{\leadsto} \: \sf \dfrac{88 \: * \: 7}{22} \: = \: r$

$\bullet{\leadsto} \: \sf 4 \: * \: 7 \: = \: r$

$\bullet{\leadsto} \: \boxed{\sf r \: = \: 28 \: cm.}$

$\huge{\bf{\red{\mathfrak{Conclusion:-}}}}$

$\bullet{\mapsto} \: \boxed{\therefore{\sf r \: = \: 28 \: cm.}}$

$\huge{\bf{\purple{\mathfrak{Note:-}}}}$

$\bullet{\leadsto}$ Here, Perimeter or Circumference both mean the same for a circle.