21. Find the area of a triangle whose sides are 13cm, 12cm & 10 cm.
22. For the given data find the mean & mode.
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Answer:
21.Area of a triangle = 13cm+12cm+10cm
= 35cm.
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ANSWER -
21 ) AREA IS A + B + C UPON 2
13 + 12 + 10 UPON 2
35 UPON 2= 17.5
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