Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answer as a decimal

Mathematics

1 answer:

Phantasy [73]3 years ago

4 0

Area of a circle with diameter 14.

That means the radius is r=7 and the area is of course πr²

Answer: 49π

You might be interested in

Can you please tell the answer of 398 x 74 I am just in grade 5 it's the multiply if you know help me

charle [14.2K]

Answer:29,452

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Suppose you travel to Africa and drop a note in a sealed bottle in the Nile at its source. If the bottle traveled at 7 km/h on a

ValentinkaMS [17]

The time required for the bottle to reach the end of Nile is 963 hours

What is Speed?

Speed is defined as the rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude

Speed = Distance / Time

Given data ,

Let the speed of the bottle in the river be S = 7 km/h

Let the distance traveled by the bottle in the river be D = 6741 km

Now , the time taken by the bottle to reach the distance D with speed S is calculated by the equation

Speed = Distance / Time

and ,

Time = Distance / Speed

Substituting the values of distance and speed in the equation , we get

Time taken by the bottle = 6741 / 7

= 963 hours

Therefore , the time required is 963 hours

Hence , The time required for the bottle to reach the end of Nile is 963 hours

To learn more about speed click :

brainly.com/question/19930939

#SPJ1

5 0

8 months ago

2b) if d = 1/2 what is t?

Kruka [31]

Answer:

please send the full question please

4 0

1 year ago

A ball rolls down an inclined plane such that the distance (in centimeters) that it rolls in t seconds is given by s(t) = 2t^3 +

IRISSAK [1]

The ball's velocity will be represented by the derivative of its distance function:

$s'(t)=6t^2+6t$

Now find the times $t$ for which this is equal to 30, i.e. solve

$6t^2+6t=30\implies t^2+t-5=0$

This has two solutions, $t=-\dfrac{1\pm\sqrt{21}}2$ , but only one is positive and falls in the interval $[0,3]$ . So the velocity reaches 30 cm/s when $t=-\dfrac{1-\sqrt{21}}2\approx1.79$ .