question archive Professor Ivy wants to buy a pool and has 2 choices, a rectangular pool that is 12
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Professor Ivy wants to buy a pool and has 2 choices, a rectangular pool that is 12.5 feet by 50 feet by 90 inches deep, or a cylindrical pool that has a 2 meter radius and is 10 meter deep. Round to one decimal and use proper units for all answers.
Example: 1.2 ft^2 3.4 in^3
Determine the volume of the rectangular pool.
Determine the volume of the cylindrical pool.
Which pool will have the larger volume? Complete the sentence below. 3
The rectangular pool will be than the cylindrical pool.
Answer:
Volume of rectangular pool = 4687.5 ft3
Volume of cylindrical pool = 4439.1 ft3
The rectangular pool will be 248.4 ft3 greater than the cylindrical pool?
Step-by-step explanation
Volume of recatngular pool = Length x Width x depth
= 50 x 12.5 x (90/12) (90 inch = 90/12 feet)
= 4687.5 ft3
Volume of cylindrical pool = ?π? x r2 x h
where r = radius = 2 m and h = height = 10 m
Therefore
Volume of cylindrical pool = ?π? x r2 x h
= ?π? x 22 x 10
= 125.7 m3
Also 1 m3 = 31.3147 ft3
125.7 m3 = (125.7 x 31.3147 ) ft3 = 4439.1 ft3
Volume of cylindrical pool = 125.7 m3 = 4439.1 ft3
Clearly , Volume of rectangular pool is greater than the cylindrical pool
Difference in pool = Volume of rectangular pool - Volume of cylindrical pool = 4687.5 - 4439.1
= 248.4 ft3
The rectangular pool will be 248.4 ft3 greater than the cylindrical pool