Explanation

As we all know

Circumference of the circle: 2πr

The radius of the circle: r

Ratio = 2πr : r = 2πr/r = 2π

Thus we conclude that 2π:1

Explanation

=60. percent *70 

=(60.:100)*70 

=(60.*70):100

=4200:100 = 42

Now we have: 60. percent of 70 = 42

SH18-8-2023

Explanation

One kilometer is equal to 1000 meters.

...

The term “kilo-” in “kilometer” is a prefix in the metric system that means “thousand.”

So, when we say “kilometer,” it means a 1000 meters. 

Explanation

Solution

• 13 ÷ 2 = 6, remainder 1

• 6 ÷ 2 = 3, remainder 0

• 3 ÷ 2 = 1, remainder 1

• 1 ÷ 2 = 0, remainder 1

Reading the remainders from bottom to top: 1101

So, 13 in binary = 1101.

Explanation

3x:2X

3X=2X+5 3

X-2X=5

X=5

Age of younger one is 2X

 X is 5 that is equal to 5×2=10

ND11-3-2023

SH25-8-2023

Explanation

Arithmetic mean= (18+3)/2=10.5

formula: sum of n A.M= n*A.M

4A.M=4*10.5

         =42

Explanation

To find the percentage, divide 1.14 by 1.9 and multiply by 100:

(1.14 ÷ 1.9) x 100 = 60%

Explanation

Let the total number of rabbits = x

Let the total number of pigeons = y

total number of head = 20 

                x + y = 20        eq (1)

total number of feet = 48 

             4x  +2y  = 48

              2x + y   = 24    eq (2)

Subtracting equation (2) from eq (1)

   2x + y -x - y = 24 -20

        x = 4

Explanation

Man climbs 20 yards and slips down 5 yards in one minute

i.e. he climbs (20-5 = 15 yards) in one minute.

But in the last minute, he will be climbing 20 yards as he gets on the top so no slip.

Time taken to climb 80 yards = 60/15 + 1

                                                   = 5 minutes.

He climbs the hill in 5 minutes

Explanation

In 1/h hour the student solves q questions

In 1/h*h hours the student will solve q*h questions

That is in 1 hour the student will solve q*h questions.

So in q hours, the student will solve q*q*h questions

So your answer is:-  q²h questions

Sh31-8-2023