A homeowner is building a circular fire pit in his backyard. He plans to outline the pit with bricks and cover the space inside the pit with sand. The homeowner has decided to build the pit with a diameter of 3 feet.

PART A: In order to know how many bricks to buy, the homeowner must know the distance around the outside of the pit. Calculate both the exact distance and the approximate distance.

PART B: In order to know how much sand to buy, the homeowner must know how much space needs to be covered inside the pit. Calculate both the exact area and the approximate area.

PART A:

1.5 or 4.71

PART B:

2.25 or 7.065

Step-by-step explanation:

PART A: (circumference)

In order to find circumference, you must multiply radius by

This would 1.5 (diameter [3] divided by 2) x = 1.5 or 4.71

PART B: (area)

The area of a circle can be found by the equation x

This would be 1.5 x 1.5 = 2.25 or 7.065

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)