Question

please ans this question

Answer 1

Hey friend ...!! here's your answer
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Question - 70


Speed of train = 60 km/hr
Train starts at = 1 : 45 pm


Train travel in one hr = 60 km
Train travel in 165 km in x hrs

By using formula
Time = Distance/ speed
Time = 165 / 60
Time = 2 hrs 45 minutes

So we add 2 hrs 45 minutes in starting time. (1:45pm)

so we get 4: 30 pm

So, Train reach at distance of 165km at 4 :30 pm.



Question 71



Let the side = 4cm

Perimeter of square = 4× side
= 16 cm

Area of square = side × side
= 16cm ^2

So that the 4 is a side which equals the area and perimeter of square.

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#Hope its help you dear#
☺

Answer 2

In your first question.. . You need to find the amount of time taken to cover 165 km first.


So
$\frac{165}{60} = \frac{33}{12} = \frac{11}{4} = \frac{8}{4} + \frac{3}{4} = 2 \: hours \: (now \: convert \: \frac{3}{4} hrs \: into \: minutes) \\ \frac{3}{4} \times 60 = 45minutes$
So the train took a total of 2 hr 45 minutes since 1:45.

1 : 45 + 2 :45 = 4 : 30 Pm answer





the second question can be solved through options.


$4a = {a}^{2}$
satisfy by putting options !

4 looks a correct option.. .

$4 \times 4 = {4}^{2} \\ 16 = 16$
So 4 is your side.