A car wheel makes 2500 revolutions in moving 5.5 km. Find the diameter and circumference of the car wheel. 10. ABCD is a square and sides are bounded by four semicircular region. Find the perimeter of the figure, if each side of square is 21 cm. 21 cm [Hint: perimeter = 4 x ( 1/2x 2πr ) solve both of the questions and write the answer with statements
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Answer:
70
Step-by-step explanation:
Let,radius of wheel be r cm.
Distance covered by wheel in one revolution
\begin{gathered} \tt\large{ \frac{5.5}{2500} \: km \: = 220 \: cm } \\ \end{gathered}
2500
5.5
km=220cm
Circumference of wheel = 220 cm
\tt\large{ 2\pi \: r = 220 \: cm }2πr=220cm
\begin{gathered}\tt \longrightarrow \large \: { \: r \: = \frac{220 \times 7}{2 \times 22} } \\ \end{gathered}
⟶r=
2×22
220×7
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Answer:
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Step-by-step explanation:
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