An arc length in a circle is 20 cm, and the central angle corresponding to the arc is 120 degrees. Find the radius of the circle.

A) 9.59 cm

B) 9.55 cm

C) 9.57 cm

D) 9.058 cm

Find the area of the scalene triangle ABC with the sides 8 cm, 6 cm and 4 cm.

A) \$\sqrt(132) cm^2\$

B) \$\sqrt(134) cm^2\$

C) \$\sqrt(135) cm^2\$

D) \$\sqrt(133) cm^2\$

The perimeter of an isosceles triangle is 15 units. Find out the length of the third side of the triangle if the equal sides measure 4 units each.

A) 1 unit

B) 12 units

C) 10 units

D) 7 units

If the slope of a line joining A(4, x) and B(- 5, 9) is 1, then find x.

A) 18

B) 14

C) 15

D) 17

Find the length of the line segment between points P (8, 5) and Q (4, 3).

A) \$\sqrt(20)\$

B) \$\sqrt(2)\$

C) \$\sqrt(11)\$

D) \$\sqrt(12)\$