1.

What will be the effect on the area of an isosceles triangle if all the sides are doubled in length ?1). Increase to four times the area of original triangle2). Increase to two times the area of original triangle3). Increased by 150%4). Increased by 200%

Answer»

Solution

If the sides are all DOUBLED, the semi PREIMETER gets doubled.

AREA = $ \sqrt {s(s-a)(s-b)(s-c)}$

New area = $ \sqrt {2S(2s-2a)(2s-2b)(2s-2c)}$

4 TIMES the original area.



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