Answer:
Ratio of area of circles: = πr2 :πc2 = πr2 :π r2 4 = 4 :1. 1. The small equilateral triangle is rotated through 60° about O, the center of the circle. The arm of the rotation is the radius of the circle
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
the sum of the express of the summation of the notation
Actually, the area of a triangle is a = bh/2. If a = 30 and b = 12:



So he height is 5 units
Answer: the answer is d
Step-by-step explanation: