Question
Find the area of triangle formed by the points A(1, 2),
B(4, 6), and C(5, 2).Solution
Area = (1/2) | x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) | = (1/2) | 1(6 - 2) + 4(2 - 2) + 5(2 - 6) | = (1/2) | 1(4) + 0 + 5(-4) | = (1/2) | 4 - 20 | = (1/2) × 16 = 8 sq. units.
From the following two different appearance of dice find out the number which is opposite ‘5’.
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According to the given picture, 6 letters A, B, C, D, E and F are marked on each surface of the dice.
Which letter is marked on the surface oppos...
Which of the following cube in the answer figure cannot be made based on the unfolded cube in the question figure?
Two different positions of the same dice are shown. If number 6 is on the lower board then what number will be on the upper board?
Three different positions of the same dice are shown. Find the number on the face opposite the face showing ‘4’.
Choose the cube that will be formed by folding the sheet of paper shown in the problem figure.
