Asemicircular flower bed has a diameter of 3 metres.
what is the area of the flower bed?
m2

give your answer to 1 decimal place.

area of circle = πr²

use π = 3.14

you can use a calculator for this question.

Step-by-step explanation:

we know that

The area of a circle is equal to

so

The area of a semicircle is equal to

In this problem we have

-----> the radius is equal to the diameter divided by two

substitute in the formula of area of the semicircle

answer: 1 and 3

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.