First speed is 158.75 km/hr
Step-by-step explanation:
- Step 1: Given the car travels 635 km in 4 hours. Find speed of the car.
Use formula for Speed = Distance/Time
⇒ Speed = 635/4 = 158.75 km/hr
Surface area is 62 units ^2
5 x 2 = 10 since there are 2 of these side double it (20)
3 x 2 = 6 since there are 2 of these side double it (12)
3 x 5 = 15 since there are 2 of these side double it (30)
20 + 30 + 12 = 62
Hello:
<span>area : a = (b×h)/2
15 = (10×h)/2
h = (15×2)/10 = 3m² </span>