Final answer:
To find the area of a rectangle, multiply the length by the width, so the correct equation is 7 × 6 = square centimeters. For a triangle, use 1/2 × base × height and convert all measurements to the same units, then express the result using the appropriate number of significant figures. The correct answer is c. 7 x 6 = square centimeters.
Step-by-step explanation:
The equation to find the area of a rectangle is by multiplying the length by the width. If a rectangle is divided into square centimeters, and the sides are given as 7 cm and 6 cm, the correct equation to use is length × width, which is option c, 7 × 6 = square centimeters.
For the area of a triangle, you use the formula 1/2 × base × height. Given a base of 1.007 m and a height of 0.665 m, convert meters to centimeters (as 1 m = 100 cm), and then use the formula to calculate the area.
The base in centimeters is 100.7 cm and the height is 66.5 cm, so the area in square centimeters is 1/2 × 100.7 cm × 66.5 cm, which must be expressed in the proper number of significant figures.
We round the resulting number to match the least number of significant figures from the measurements used in the calculation.