Explanation

Density = Mass / Volume

= 16 g / 160 cm³

= 0.1 g/cm³

Given the mass of 16 g and the volume of 160 cm³, the density of the piece of wood is 0.1 g/cm³.

Explanation

The diameter is the full distance across the circle through the center.

If the circle is labeled or measured and shows a span of 36 cm across, then the diameter = 36 cm is correct.

Explanation

The area of a square is given by the formula A = s², where A is the area and s is the length of a side.

Given A = 169 in², we can solve for s: s = √A = √169 = 13 inches.

Explanation

To find the percentage of spaces reserved, divide the number of shaded spaces by the total number of spaces and multiply by 100.

Number of shaded spaces = 8

Total number of spaces = 20

Percentage reserved = (8 / 20) * 100 = 40%

Explanation

Weight of 1 apple = 2 kg ÷ 4 = 0.5 kg

Weight of 10 apples = 0.5 kg × 10 = 5 kg

Explanation

Let's solve the expression 3(a ÷ b)^c with the given values: a = 36, b = 12, and c = 2.

First, calculate a ÷ b = 36 ÷ 12 = 3.

Then, raise it to the power of c: 3^2 = 9.

Finally, multiply by 3: 3 * 9 = 27.

Explanation

Flour per person = 3 cups ÷ 10 people = 0.3 cups per person

For 15 people: 0.3 × 15 = 4.5 cups

Explanation

Cost per bag = $10.32 ÷ 8 = $1.29

For 20 bags: $1.29 × 20 = $25.80

Explanation

"With keen interest" is the correct phrase to express the manner or attitude of studying.

"In Japan" correctly refers to the location where the studying took place.

Explanation

We learn "about" someone when we gain information or understanding regarding them.

The source is the poem, so we say we learn this "in" the poem — where the information is found.