Hint (a): hint (b): find the area of a circle πr2. notice that this is only three-fourths of a circle. hint (b): find the circumference of a circle (2πr). note that this is, again, three-fourths of a circle. once you find the adjusted circumference, remember to incorporate the radius of the straight edges in your calculations.] answer

For A. You didn't gave the picture of the problem but I will attach it later with the picture of B. We are looking for the perimeter, the answer is 2 + 12 + 2 + 3 + 5 + 3 + 2 + 9 + 7 + 3 = 48 cm.

For B. The radius is 4 in. So the formula is given, 2pi r = 2(pi)(4 in) = 25.1327412 in is the circumference of a circle which only signifies three fourths.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!