31. A 20 m deep well with radius 7m is dug and the earth from digging is evenly spread out to form a
platform 22m X 14m. Find the height of the platform.​

Height of rectangle block = 10 m

Step-by-step explanation:

Given:

Height of well = 20 m  

Radius of well = 7 m

Dimension of rectangle = 22m x 14m

Find:

Height of rectangle block

Computation:

Volume of well = Volume of rectangle block

πr²h = (l)(b)(h)

(22/7)(7)²(20) = (22)(14)(Height of rectangle block)

(22/7)(49)(20) = (308)(Height of rectangle block)

3080 = 308(Height of rectangle block)

Height of rectangle block = 10 m

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.