Solve the problem.The area of a circle of radius r is given by the polynomial ?r2, where ? is an irrational number. Use 3.14 as an approximation of ?, and find the area of a circle with radius 
A. 192 cm2
B. 50.24 cm2
C. 25.12 cm2
D. 200.96 cm2
Answer: D
Mathematics
You might also like to view...
Find the area of the SAS triangle ABC. If necessary, round the answer to two decimal places.a = 12 km, b = 15 km, C = 52°
A. 88.80 sq km B. 141.84 sq km C. 70.92 sq km D. 35.46 sq km
Mathematics
Solve the equation for solutions in the interval [0, 2?).sec 
= cos 
A. 
B. 
C. 
D. {0}
Mathematics
Find the product. Write the product in rectangular form, using exact values.[7(cos 120° + i sin 120°)] [2(cos 90° + i sin 90°)]
A. 5
- 
i
B. -7
- 7 i
C. 7
- 28 i
D. 14 - 14
i
Mathematics
Find the vertex of the parabola.y = x2 + 6x + 10
A. (1, -3) B. (-1, 3) C. (-3, 1) D. (3, -1)
Mathematics