Question

If the border of the road sign has to be completely covered with tape, find the length of the tape required.

• A. 6 feet
• B. 7 feet
• C. 8 feet
• D. 9 feet

Answer 1

The correct option is B 7 feet

Length of the tape required = Perimeter of the road sign

The road sign is an equilateral triangle.

Perimeter = 3 × Side
= $3\times 28$
= 84 inches

1 inch = $\frac{1}{12}$ feet
84 inches = $84\times \frac{1}{12}$
= 7 feet