Maths-
General
Easy

Question

# A Submarine descends to  of its maximum depth. Then it descends another  ofits maximum depth. If it now at 650 feet below sea level , What is its maximum depth

Hint:

## The correct answer is: Hence, the maximum depth is 780 feet.

### Answer            Step-by-step explanation: ○   Given:First submarine descends to  of its maximum depth.Then it descends another   of its maximum depth.The height below sea level is 650 feet.○    Step 1:Let the maximum depth be x feet.So,At first, submarine descends  =  x feet.Then, submarine descends =  x feet.Total descend =  x +  x feetTotal descend =  x  +  x feetTotal descend =  x feetIt is given that, height below sea level; is 650 feet∴ x = 650                5x =  650 × 6                5x = 3900                x =                 x = 780 Final Answer:                 Hence, the maximum depth is 780 feet.

Depth is the actual distance of an object beneath the surface, as measured by submerging it with a perfect ruler. The depth of an object in a denser medium as seen from a rarer medium is referred to as apparent depth in a medium. Its value is less than the true depth.

A formula for calculating ocean depth. D = V divided by 1/2 T D stands for depth (in meters) T= Time (in seconds) V = 1507 m/s (speed of sound in water) (speed of sound in water)

Since the speed of sound in water is known, the depth "d" is determined using the straightforward equation "d/2 = vt."