Q1 of 50 Page 12

Find the area of a triangle whose base and altitude are 5 cm and 4 cm respectively.

Base = 5 cm, Altitude = 4 cm


Area of ∆ =


Area of ∆ = = 10 cm2


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13

A hand fan is made by stitching 10 equal size triangular strips of two different types of paper as shown in Fig. 12.28. The dimensions of equal strips are 25 cm, 25 cm and 14 cm. Find the area of each type of paper needed to make the hand fan.

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A triangle and a parallelogram have the same base and the same area. If the sides of the triangle are 13 cm, 14 cm and 15 cm and the parallelogram stands on the base 14 cm, find the height of the parallelpgram.

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Find the area of a triangle whose sides are 3 cm, 4 cm, and 5 cm respectively.

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