... radius 3x is π (3x)2= 9πx2 = 9 · 4 = 36 . 3. (D) 23 49 13 13 22 222++====xxxx4. (E)The sum of the angles in a parallelogram is 36 0°. 12 36 0 30 xx=°=°Angle B = 5x = 5 · 30 ° = 15 0°5. ... whose bases are 10 and 12 and whose altitude is 3 is(A) 66(B) 11 (C) 33 (D) 25(E) 16 1 22. The circumference of a circle whose area is 16 π is(A) 8π(B) 4π(C) 16 π(D) 8(E) 16 3. Find the perimeter ... are (2, 1) and thecoordinates of B are (4, 6), find the coordinatesof A.(A) 33 1 2,(B) 12 1 2,(C) (0, –4)(D)2 1 2 1, (E) 1 −,2 1 2 3. Find...