Question

in a corner of a rectangular field with dimensions 35 m * 22m a well with inside diameter 14 m is dug 8 m deep. The earth dug out is evenly spread over the remaining part of the field . Find the rise in the level of the field

Answer 1

Answer:

2m

Step-by-step explanation:

Find the area of the rectangle:

Area = Length x Breadth

Area = 35 x 22 = 770 m²

Find the area of the well:

Area = πr²

Area = π(14 ÷ 2)² = 154 m²

Find the area of the rectangle without the well:

Area = 770 - 154  = 616 m²

Find the amount of earth dug:

Volume = πr²h

Volume = π(14 ÷ 2)²(8) = 1232 m³

Find the raise in height:

Raise = Volume ÷ area

Raise = 1232 ÷ 616 = 2 m

Answer: There is a rise of 2m.

Answer 2

Area of rectangle =35×22=770

Height=770÷14×8=440 cm

4.4m

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