Sheet # 11/The Winter Olympics
Name: _____________________ Date_____________
Explain and Show Your Work.
1) When Kathy walked the temperature she felt on her face was 5 degrees centigrade She traveled on cross country skies and temperature felt like - 15 degrees centigrade. By how much did the temperature appear to change?
2) In ice hockey, the face-off circles have a circumference of 28.27 meters. What is the area of a face-off circle?
3) Jack made a phone call to Norway from 7:30 p.m. to 8:14 p.m. when rates were 16 cents per minute. How much will the call cost? If Jack made the same call to Norway after 11 p.m., when there is a 30% discount, how much less would it have cost?
Answers for sheet # 11
1) 5 - (15) = 20 degrees
2) 2 x 3.14 x r = 28.27
r = 4.50 meters
Area = 3.14 x 4.5 x 4.5
63.58 meters
3)
Length of the phone call: 44 minutes
Total cost: 44 x 16 cents = $7.04 cents
After 11 p.m., 30% discount. Total cost of the same call = $4.92. He would have saved $2.11