Answer:
<h2>Circumference=2πr</h2>
<h2>C = 2*3.14*4</h2><h2>C= 25.12cm</h2>
Step-by-step explanation:
<h2>Hope it helps....</h2>
Answer:
3.08 km/h.
Step-by-step explanation:
We know that,
Ali traveled at a speed of s km/h for 2.5 hours.
Let d be the distance and t be the time.
...(1)
On his return journey, he increased his speed by 4 km/h and saved 15 minutes. So, distance is d and times is t-15.
...(2)
From (1) and (2), we get
Put t=40 in (1).
So, t=40 and d=100.
Now,
Total distance = d + d = 100 + 100 = 200
Total time = t + t - 15 = 40 + 40 - 15 = 65
So, the average speed is
Therefore, the average speed is 3.08 km/h.
Answer:36
Step-by-step explanation:you multiply the 9 and the 4
Đáp án:
Lúc đầu, bạn B có 8 quả táo.
Ta có phép tính như sau: 12 - (2+2) =
Vì ki đó ta phải tr ừ đi cả 2 quả nữa để tính dá trị thật của quả téo/