## Q: In △PQR, ∠P = 90°. S and T are the mid points of sides PR and PQ, respectively. What is the value of RQ2/(QS2+ RT2)? 320 064d1f0a8a798377447183d9e

• 1
$$3\over 4$$
Correct
Wrong
• 2
$$4\over 5$$
Correct
Wrong
• 3
$$1\over 2$$
Correct
Wrong
• 4
$$2\over 3$$
Correct
Wrong
• Workspace

• 1
21°
Correct
Wrong
• 2
28°
Correct
Wrong
• 3
24°
Correct
Wrong
• 4
22°
Correct
Wrong
• Workspace

• 1
75°
Correct
Wrong
• 2
81°
Correct
Wrong
• 3
84°
Correct
Wrong
• 4
78°
Correct
Wrong
• Workspace

## Q: A secant PAB is drawn from an external point P to the circle with centre O, intersecting it at A and B. If OP = 17 cm, PA = 12 cm and PB = 22.5 cm, then the radius of the circle is: 255 064d20497e0ce55749682da9e

• 1
$$2\sqrt {3} \$$ cm
Correct
Wrong
• 2
$$\sqrt {19} \$$ cm
Correct
Wrong
• 3
$$\sqrt {17} \$$ cm
Correct
Wrong
• 4
$$3\sqrt {3} \$$ cm
Correct
Wrong
• Workspace

• 1
49 : 13
Correct
Wrong
• 2
13 : 36
Correct
Wrong
• 3
13 : 49
Correct
Wrong
• 4
36 : 13
Correct
Wrong
• Workspace

• 1

630

Correct
Wrong
• 2

560

Correct
Wrong
• 3

540

Correct
Wrong
• 4

720

Correct
Wrong
• Workspace

• 1

1800 and 220

Correct
Wrong
• 2

260 and 300

Correct
Wrong
• 3

300 and 340

Correct
Wrong
• 4

220 and 260

Correct
Wrong
• Workspace

## Q: In ΔABC, D and E are points on the sides AB and AC, respectively, such that DE || BC. If AD = 5 cm, DB = 9 cm, AE = 4 cm and BC = 15.4 cm, then the sum of the lengths of DE and EC (in cm) is: 217 064c8d763a919c8488e228ff0

• 1
11.6
Correct
Wrong
• 2
10.8
Correct
Wrong
• 3
13.4
Correct
Wrong
• 4
12.7
Correct
Wrong
• Workspace

Error Reported Successfully

Error Reported Successfully

Error Reported Successfully

Error Reported Successfully

Error Reported Successfully