An elevator descends into a mine shaft at the rate of 6 m/ min. If the descent starts from 10 m above the ground level, how long will it take to reach - 350 m.
pls answer fast....pls
Answers
Step-by-step explanation:
CORRECT QUESTION :
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If area of rectangular garden of 5 m breadth is 300 m square, then what will be the length of garden ?
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ANSWER :
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If area of rectangular garden of 5 m breadth is 300 m square then the length of garden will be 60 m.
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SOLUTION :
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❒ Given :-
Area of the rectangular garden = 300 m²
Breadth of the rectangular garden = 5 m
\begin{gathered} \\ \end{gathered}
❒ To Find :-
Length of the rectangular garden = ?
\begin{gathered} \\ \end{gathered}
❒ Required Formula :-
★ Area of a rectangle = Length × Breadth
\begin{gathered} \\ \end{gathered}
❒ Calculation :-
\begin{gathered} \\ \end{gathered}
We have,
Area = 300 m²
Breadth = 5 m
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Using the formula of Area of a rectangle,
★ Area = 300 m²
➨ Length × Breadth = 300 m²
➨ Length × 5 m = 300 m²
➨ Length = \sf{\dfrac{300 \: m {}^{2}}{5 \: m}}
5m
300m
2
∴ Length = 60 m ✪
Hence, the Length of the rectangular garden is 60 m.
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KNOW MORE :
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➤ Rectangle :-
✎ A rectangle is a plane figure which has four sides and four angles. Each of the four angles are right angles, i.e, 90°. Again, the opposite sides of a rectangle are of equal length and parallel.
✎ A rectangle is or a quadrilateral which opposite sides are equal and parallel to each other and each of the four angles is a right angle.
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➤ Related Formulas :-
✎ Area of a rectangle = Length × Breadth
✎ Perimeter of a rectangle = 2 (Length + Breadth)
✎ Length = \sf{\dfrac{Area}{Breadth}}
Breadth
Area
[ When Area and Breadth of a rectangle is given ]
✎ Breadth = \sf{\dfrac{Area}{Length}}
Length
Area
[ When Area and Length of a rectangle is given ]
✎ Length = \sf{\dfrac{Perimeter}{2} - Breadth}
2
Perimeter
−Breadth [ When Perimeter and Breadth of a rectangle is given ]
✎ Breadth = \sf{\dfrac{Perimeter}{2} - Length}
2
Perimeter
−Length [ When Perimeter and Length of a rectangle is given ]
✎ Diagonal of a rectangle = √{(Length)² + (Breadth)²}
Answer:
Distance descended is denoted by a negative integer,
Initial height =+10 m
Final Depth =−350 m
Total distance to be descended by the elevator =(−350)−(+10)=−360 m
Given, the time is taken by the elevator to descend −6 m=1 minute
Thus, time taken by the elevator to descend −360 m=
(−6)
(−360)
------- [from the formula : speed=
time
distance
]
=60 minutes