The area of a circular field is 154m.find the time taken by an athlate to complete 2 rounds if she is jogging at the rate of 5 km/hr
Answers
Answered by
2
area = 154m² = pi×r² = 22r²/7
r = 7m
circumference = 2×pi×r = 2×22×7÷7 = 44m
1 round ⇒ 44m
2 rounds ⇒ 88m
5000m ⇒ 1hr
88m ⇒ x
x = 88/5000 hr = 63.36 s ≈1min 4s
r = 7m
circumference = 2×pi×r = 2×22×7÷7 = 44m
1 round ⇒ 44m
2 rounds ⇒ 88m
5000m ⇒ 1hr
88m ⇒ x
x = 88/5000 hr = 63.36 s ≈1min 4s
Answered by
0
Answer:
Step-by-step explanation:
Similar questions