SET 2 (p. 18) Flashcards
- In a car race, the rate of one car is 120 km/hr and the rate of another is 105 km/hr. If the faster car finished the race 20 minutes before the slower one, what was the distance of the race?
280 km (p. 22)
3: The area of a cross-section of a right circular cone is 20, and the area of the base is 45. If the altitude of the cone is 6, how far from the base is the cross-section?
2 (p. 23)
- Find the altitude of the right prism for which the area of the lateral surface is 143, and the perimeter of the base is 11.
13
- These are signs that instruct road users to meet certain traffic rule requirements or road condition.
Special instruction signs
- Jack’s beanstalk has a growth pattern stated as follows: “On the first day it increased its height by 1/2, on the second day by 1/3, on the third day by 1/4, and so on”. How long will it take to achieve its maximum height if it is 100 times its original height?
198 days (p. 24)
- It is a type of thermoplastic lane marking designed to aid and provide motorists with visual, audio, and motion warning on the road.
Rumble strips
12: A long cylinder driven into the soil that extends deep into the ground to support a structure by transferring loads to a deeper and stronger layer of soil or rock.
Pile
- Melissa can mow the lawn in 4 hours, while her husband, George, can mow the lawn in 3 hours. They agreed to mow the lawn together. How long will it take them to mow the lawn together?
1.7 hours
- Find the area which is inside the circle r = 3sinθ and outside the cardioid r = 1 + sinθ.
π sq. units
15: A company wishes to accumulate P350,000 over a period of 5 years needed for building expansion. To have this amount, quarterly payments at the end of each quarter will be made into a savings account that earns 10% compounded quarterly. How much must each payment be?
P13,701.50
- A coin purse contains 5 centavo, 10 centavo, and 25 centavo coins, 30 coins in all. The total amount of all coins is P 4.40. Find the total amount of all 10 centavo coins.
P 1.40 (p. 25)
- Find the angle of the sector that should be removed from a circular piece of canvas of radius 12 ft so that the conical tent made from the remaining piece will have a height of 7 ft.
67.60°
- It is used to test the relative consistency of concrete.
Slump test
- What is the measure of an interior angle of a regular dodecagon?
150°
34: These are joints provided wherever concrete cement pavement work is suspended.
Construction joint