Answer:
570 feet above seal level
Step-by-step explanation:
The hiker was at 450 ft above sea level. He ascended 120 feet toward the top of the mountain (or goes up). 450+120 = 570. Therefore his new position is 570 feet above sea level!
Answer:
20 ft
Step-by-step explanation:
Keep in mind that, both ratios are the same, let the length of the shadow be x, then you can make an equation that 30/ 40 = 15 / x, then 30x = 15 * 40 = 600, so x = 20.
Answer:
5.6 units
Step-by-step explanation:

Given that the area of the circle is 31.36π,
31.36π= πr²
Divide both sides by π:
31.36= r²
r²= 31.36
Square root both sides:

r= 5.6 units
Answer:7.5
Step-by-step explanation: