Question

Surface area of 15 yd

Answer 1

3 π r^2
3 x π x 15^2
3 x π x 225
SA = 2120.57 ( rounded to 2 d.p)

Answer 2

Surface area is,
`225\pi (yd^(2))` or
`706.86(yd^(2))` .

Explanation:

1. Identify the shape of the surface area of which we need to calcuiate the area.

As we may see in the image, the surface area has the shape of a circle.

2. Recall the area formula for circles.

Formula:
`A=\pi r^(2)`; where "r" is the radius of the circle.

3. Identify the given data.

As we can see in the image, the radius of this circle is 15 yd (yards).

4. Use the data and calculate with the formula.

`A=\pi (15yd)^(2)\\ \\A=225\pi (yd^(2)) =706.86(yd^(2))`

5. Conclude.

Surface area is,
`225\pi (yd^(2))` or
`706.86(yd^(2))` (706.86 square yards).