Apecan pie is being served for dessert. one piece of pie has an arc length of 7.85 in. it has been cut into 8 equal pieces. what is the radius of the pecan pie? (round to the nearest whole number)

10 inches.

Step-by-step explanation:

Since the pecan pie is a circle, you can use this formula:

Where "r" is the radius and is the central angle of the arc in radians.

If the pecan pie has been cut into 8 equal pieces then the central angle is:

Now you know the arc length and the central angle, then, you can solve for "r" from  :

Substituting values, you get that the radius of the pecan pie rounded to the nearest whole number is:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.