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8_murik_8 [283]
2 years ago
6

(X8.6.PS-12

Mathematics
1 answer:
Andrew [12]2 years ago
7 0

Answer:

area = 138 m²

Step-by-step explanation:

radius of large circle = 12 m

radius of small circle = 10 m

large circle area = πr² = (3.14)(12²) = 452.16 m²

small circle area = πr² = (3.14)(10²) =314 m²

452.16 - 314 = 138.16 m²

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The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?
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A triangle has three angles, and their measures add up to 180 degrees.
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This triangle has one angle of 40 deg, and two angles that measure the same; call the measure of each base angle x.

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x = 70

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