Of the estimated natural gas reserves in north america 4.59, Ask an Expert

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Task: Of the estimated natural gas reserves in North America, 4.59 *10^9 m ^3 are in the United States. 2.66*10^9 m^3 are in Canada, and 1.99*10^9 m^3 are in Mexico. In making a circle graph (circular sectors represent percentage of the whole - a pie chart) with a radius of 4.00 cm for these data, what are the central angle and area of the sector that represents Canadian Reserves?

Note: Theta is 2 times area divided by radius squared.

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