If the height of a triangle is decreased by 40% and its base is increased by 40%, what will be the effect on its area? |
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(a) |
No change |
(b) |
8% decrease |
(c) |
16% decrease |
(d) |
16% decrease |

If the height of a triangle is decreased by 40% and its base is increased by 40%, what will be the effect on its area? |
|||||||

(a) |
No change |
(b) |
8% decrease |
(c) |
16% decrease |
(d) |
16% decrease |

1 Answer

127 votes

Initial base = initial height =

Initial area =.

New base = of cm.

New height = 60% of cm.

New area = .

Area decreases = .

Decreased % =

127 votes

127