Question

the area of a rectangular field is 48 metre square and one of its sides is 6 cm how long a person take to cross the field diagonally at the rate of
15 m /minute ​

Answer 1

Answer:

40 seconds

Step-by-step explanation:

Area = 48 m²

length = 6 m

Find the breadth of the rectangle:

Area = Length x Breadth

48 = 6 x Breadth

Breadth = 48 ÷ 6

Breadth = 8 m

Find the length of the diagonal:

a² + b² = c²

6² + 8² = c²

c² = 6² + 8²

c² = 100

c = 10 m

Find the time needed to cross the diagonal:

speed = 15 m/min

distance = 10 m

Time needed = distance ÷ speed

Time needed = 10 ÷ 15

Time needed = 2/3 min

Convert min to seconds:

2/3 min = 2/3 x 60 seconds

2/3 min =  40 seconds

Answer: 40 seconds