Question
In a Pentagon ABCDE, ∠A = 110° and ∠B =
140° and ∠D = ∠E. Side AB and DC were extended and meet at the point P such that ∠BPC = 90°. Find the value of ∠E?Solution
Meeting point of AB and DC is P. ∠BPC = 90° ∠B = 140°, ∠PBC = 180°- 140°.= 40° ∠BCP = 90° - 40° = 50° ∠BCD = 180° - 50° = 130° Let ∠D = ∠E = x Interior Angles of polygon = (n – 2) × 180 Interior Angels of pentagon = (5 – 2) × 180 = 540 ∠A + ∠B + ∠ C + ∠D + ∠E = 540 110° + 140° + 130° + x + x = 540 2x = 540 – 380 x = 80° ∠E = 80°
(804/65) ÷ (11/798) × (129/131) = ?
1254.04 – 440.18 + 399.98 ÷ 10.06 = ?
( 19.95%  of 799.89 ) × 12.05 = ? 2 + 18.99 × 6250 ÷ 1250
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
What is the value of "Ï€"
49.96% of 861.34 + 2250% of 55.12 = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
? = 685.24 + 1024.97 – 9.992 Â
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