What value of x makes the equation ×/7 - 5 = ×/2 + 4 true?

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.

What is the area of the shaded sector?

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?