Question

e circumference of a circle is 440 cm find its radius and diameter( Π = 22/7)​

Answer 1

$\purple{ \large \underline{ \underline{ \sf{given : }}}}$

$\sf{circumference \: of \: circle = 440 \: cm }$

$\sf{ \pi \: = \frac{22}{7} }$

$\purple{\large \underline{ \underline{ \sf{solution : }}}}$

$\sf{cirumference \: of \: circle = 2 \pi \: r} \\ \sf{2 \: \pi \: r = 440 \: cm} \\ \sf{2 \times \frac{22}{7} \times r = 440 \: cm } \\ \sf{r = \frac{440 \times 7}{2 \times 22} } \\ \sf{r = \frac{ \cancel{440} {}^{20} \times 7}{2 \times \cancel{22}} } \\ \boxed{\sf{radius = 70 \: cm}} \\ \sf{diameter = 2 \: r \: } \\ \sf{diameter = 2 \times 70 \: cm} \\ \boxed{ \sf{diameter =140 \: cm }}$

Answer 2

Answer:

given:

\sf{circumference \: of \: circle = 440 \: cm }circumferenceofcircle=440cm

\begin{gathered} \sf{ \pi \: = \frac{22}{7} } \\ \end{gathered}

π=

7

22

\purple{\large \underline{ \underline{ \sf{solution : }}}}

solution:

\begin{gathered} \sf{cirumference \: of \: circle = 2 \pi \: r} \\ \sf{2 \: \pi \: r = 440 \: cm} \\ \sf{2 \times \frac{22}{7} \times r = 440 \: cm } \\ \sf{r = \frac{440 \times 7}{2 \times 22} } \\ \sf{r = \frac{ \cancel{440} {}^{20} \times 7}{2 \times \cancel{22}} } \\ \boxed{\sf{radius = 70 \: cm}} \\ \sf{diameter = 2 \: r \: } \\ \sf{diameter = 2 \times 70 \: cm} \\ \boxed{ \sf{diameter =140 \: cm }}\end{gathered}

cirumferenceofcircle=2πr

2πr=440cm

2×

7

22

×r=440cm

r=

2×22

440×7

r=

2×

22

440

20

×7

radius=70cm

diameter=2r

diameter=2×70cm

diameter=140cm