exam Maths Puzzle Numerical Ability

A central angle intercepts an arc on a circle equal in length to the diameter of a circle. Find the measure, in radians, of the central angle.

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exam Other Question

please help me find the linear equation of y=-x-1 Wendy, a loan officer at a bank, has 1,000,000 dollars to lend and is required to obtain an average return of 18% per year. If she can lend at the rate of 19% or at the rate of 16%, how much can she lend at the 16% and still meet her requirement?