multiply length by height. multiply the length by the height, and then double the product. work out 10 x 10 results = 100 square inches, then work out 100 x 2 = 200. the answer is 200 square inches.
step-by-step explanation:
Answer from: Quest
8,400-6,400=xx/6,400anyways the percent increase is 31.25% or 0.3125 you can round if you can