Find the area of the rectangle with a length of 20 inches and a width of 42 inches. A: 62 in B: 840 in C: 16,800 in D: 6,200 in
B: 840 in
To find the area of a rectangle, you can use the formula A = length × width.
In this case, the length is given as 20 inches and the width is given as 42 inches.
So, you can substitute these values into the formula to find the area:
A = 20 inches × 42 inches
= 840 square inches
Therefore, the correct answer is B: 840 in².
To find the area of a rectangle, you multiply its length by its width. In this case, the length is 20 inches and the width is 42 inches.
Step 1: Multiply the length and width.
Area = 20 inches * 42 inches
= 840 square inches
Therefore, the correct answer is B: 840 in².