If the figures/solids are similar, the ratio of the areas is equal to the square of the ratio of the corresponding sides. Let x be the area of the second figure. The equation that would best allow us to answer this item is, (394.2 in² / x in²) = (10.9 / 21.8)² The value of x from the equation is 1576.8 in².
The circumference of a circle is C = 2<span>πr Given C = 36</span><span>π, we can solve for the radius r: r = C/2</span>π = 36π/2<span>π = 36/2 = 18 cm (ANSWER) </span>
Start by dividing 84 by 4 and you get 21. Then take 100 and divide that number by 4, and you get 25. There is your answer. The 21 jars of grape jelly are equal to 25% of the number 84. Hope this helps!
