.Answer:
a. The sides of a triangle are 12m, 16m and 20m respectively. Find the altitude to its longest side.
b. The parallel sides DC and AB of a trapezium are 10cm and 12cm respectively. Its non parallel sides are each equal to 13 cm . Find the area of the trapezium.
c. The base and the corresponding altitude of a parallelogram are 10 cm and 12 cm respectively. If the other altitude is 8 cm, find the length the other pair of parallel sides.
d. The perimeter of a rhombus is 100 cm and one of its diagonal is 40 cm long. Find the length of the other diagonal .
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In (a) first find the area by herons formula then put the area equal to 1/2*base*height or using Pythagoras theorm
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