Please help on number 15
1 answer:
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You want to compute the total area of the figure. The figure is composed by four 6x4 rectangles, and two 4x4 squares.
The area of one rectangle is
The area of one square is
You have four rectangles and two squares, so the answer is
Answer:
√7 ≈ 2.646
Step-by-step explanation:
The law of cosines is applicable. It tells you ...
c² = a² + b² - 2ab·cos(C) . . . . . where a, b, c are triangle side lengths, and angle C is opposite side c.
Filling in the given information, you have ...
c² = 2² + 3² - 2·2·3·cos(60°) = 4 + 9 - 12·(1/2) = 7
c = √7 ≈ 2.646
The length of the third side is √7, about 2.646 units.
