Math, asked by Setan, 1 year ago

1. Distance from the puskesmas to the house of Mita 0.5 km. How many meters is the distance between the two places?

2. To go to school, Dania has to walk 200 m, then continue by taking the city transportation for 3 km. How many dams is Dania's distance to school?

3. The average speed of a car is 80 km / hour. What is the meaning of the speed of 80km / h?

4. A dam door drains 1,200 dm3 of water within 3 seconds. What is the water discharge at the door of the dam?

5. The discharge of water coming out of a tap is 0.8 liters / second. Of a bathtub has a volume of 160 liters, how long does it take to fill the tub to full?

Answers

Answered by Beomgyu
1

1. 0,5 km = (0,5 × 1.000) meters = 500 meters.

So, the distance of the puskesmas to the Mita house is 500 m.

2. 200 m = (200 : 10) dam = 20 dam

3 km = (3 × 100) dam = 300 dam

200 m + 3 km = 20 dam + 300 dam= 320 dam

So, the distance of Dania's house to school is 320

3. Speed ​​of 80 km / h means that in 1 hour the car can travel as far as 80 km.

4. Debit = Volume : Time

= 1.200 dm3 : 3 seconds

= 400 dm3/seconds

So, the water discharge at the door of the dam is 400 dm3 / second.

5. Time = Volume : Debit

= 160 liters : 0,8 liters/seconds

= 200 seconds = 3 minutes 20 seconds

So, the time needed to fill the tub to full is 3 minutes 20 seconds.


Setan: Thx
Setan: Beomgyu
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