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Warm up: Solve for x . 1.). 124 ◦. 2.). 70 ◦. x. 18 ◦. x. 4.). 3.). 260 ◦. x. 20 ◦. 110 ◦. x. Skills Check. Circumference & Arc Length of Circles. 2 Types of Answers. Rounded Type the Pi button on your calculator Toggle your answer Round. Exact
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Warm up: Solve for x 1.) 124◦ 2.) 70◦ x 18◦ x 4.) 3.) 260◦ x 20◦ 110◦ x
2 Types of Answers Rounded • Type the Pi button on your calculator • Toggle your answer • Round Exact • Type the Pi button on your calculator • Pi will be in your answer • TI 36X Pro gives exact answers
Circumference The distance around a circle
r = 14 feet d = 15 miles Find the EXACT circumference.
33 yd Ex 3 and 4: Find the circumference. Round to the nearest tenth. 14.3 mm
5. A circular flower garden has a radius of 3 feet. Find the circumference of the garden to the nearest hundredths. C = 18.85 ft
Arc Length The distance along the curved line making the arc (NOT a degree amount)
Ex 6. Find the Arc LengthRound to the nearest hundredths 8m 70
A Ex 8 Find the radius. Round to the nearest hundredth. 60◦ B
A 80◦ Ex 9 Find the circumference. Round to the nearest hundredth. B
A Ex 10 Find the radius of the unshaded region. Round to the nearest tenth. B 75◦
Group Work Don’t get stumped, ask your group members for help.