Question

Help if you can with all answers or at least some

Answer 1

Area of a circle is pi * radius² so:

1) Area = pi * 5²

= 25pi ≈ 78.54 yd²

2) Area = pi * 7²

= 49pi ≈ 153.94 cm²

Circumference is 2 * pi * radius so:

3) Circumference = 2 * pi * 10

= 20pi ≈ 62.83 mi

4) Circumference = 2 * pi * 3.3

= 6.6pi ≈ 20.73 in

Volume of a rectangular prism is length * width * height

5) Volume = 10 * 3 * 10

= 100 * 3
= 300 yd³

6) Volume = 5 * 7 * 5

= 35 * 5
= 175 in³

Not completely sure on the triangular prisms though. I'm almost certain the formula is 1/2 * height * base 1 * base 2 though

Answer 2

1). You use the formula A=(pi)r^2
A=(pi)(5)^2
A= 78.5yd