A wire is bent to form a square of area 169 cm2. If the same wire is bent to form a circle, then what is its area (in cm2, to the nearest whole number)? \(\text{Take }\pi = \dfrac{22}{7}\)
The side BC of a triangle ABC is extended to a point D. If ∠ACD = 117° and ∠ABC = \(\dfrac{5}{8}\) ∠BAC, then what is the measure of ∠ABC?
P, Q and R are three points on the circumference of a circle such that QR is a diameter and PQ = PR. If the radius of the circle is 7 cm, then the length of PQ is:
\(14\sqrt{2}\ \text{cm}\)
\(7\ \text{cm}\)
\(7\sqrt{3}\ \text{cm}\)
\(7\sqrt{2}\ \text{cm}\)