Question

An igloo has a circular floor with a radius of 2 yards. What is the floor’s diameter?

Answer 1

The diameter of a circle is twice the length of its radius. In this case, the radius of the igloo's circular floor is 2 yards. Therefore, the diameter can be calculated as:

Diameter = 2 * Radius

Diameter = 2 * 2 yards

Diameter = 4 yards

So, the floor's diameter is 4 yards.

Answer 2

Diameter

When we're given the radius, and asked to find the diameter, we use a simple formula, which is:

`\boldsymbol{\sf{Diameter=radius*2}}`

Since we know the radius, we substitute it into the formula:

`\boldsymbol{\sf{Diameter=2*2}}`

`\boldsymbol{\sf{Diameter=4\;yards}}`

Therefore, the diameter is 4 yards.

------------- Additional formulas -----------

`\sf{radius=\cfrac{diameter}{2}}`

`\sf{Circumference=\pi d}`

`\sf{Circumference=2\pi r}`

`\sf{Area=\pi r^2}`

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