A table with 6 rows (a-f) has columns for radius, diameter, and circumference. Given some values, calculate the missing ones using pi = 22/7.

Step 1: State the formulas for circles.
The relationships between radius ($r$), diameter ($D$), and circumference ($C$) of a circle are:

$$D = 2r$$ $$C = \pi D = 2\pi r$$

We are instructed to use the value $\pi = \frac{22}{7}$.

Step 2: Calculate missing values for rows a and b.
Row a: Given radius $r = 7$ m.

$$D = 2 \times 7 \text{ m} = 14 \text{ m}$$ $$C = 2 \times \frac{22}{7} \times 7 \text{ m} = 44 \text{ m}$$

Row b: Given diameter $D = 7$ m.

$$r = \frac{7 \text{ m}}{2} = 3.5 \text{ m}$$ $$C = \frac{22}{7} \times 7 \text{ m} = 22 \text{ m}$$

Step 3: Calculate missing values for rows c and d.
Row c: Given radius $r = 14$ cm.

$$D = 2 \times 14 \text{ cm} = 28 \text{ cm}$$ $$C = 2 \times \frac{22}{7} \times 14 \text{ cm} = 88 \text{ cm}$$

Row d: Given diameter $D = 42$ m.

$$r = \frac{42 \text{ m}}{2} = 21 \text{ m}$$ $$C = \frac{22}{7} \times 42 \text{ m} = 132 \text{ m}$$

Step 4: Calculate missing values for rows e and f.
Row e: Given radius $r = 35$ cm.

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