Read the problems carefully. Solve for the answer

1. Loma's circular garden is 5 meters in diameter. How many meters of wire are needed to put a fence around it?

2. A bicycle tire has a radius of 30 cm. Find the distance.

3. Find the circumference of a circle with a diameter of 21 metera.

4. A circle is half the radius of a larger circle. If the circumference of the larger circle is 100 meters, what is the radius of the smaller circle?

need answers now​