Tuesday

November 25, 2014

November 25, 2014

Posted by **Phil** on Tuesday, January 1, 2013 at 3:37pm.

- geometry -
**David Q/R**, Tuesday, January 1, 2013 at 4:08pmWith no knowledge of the trigonometry of triangles, argue it like this. The question wouldn't have been asked if there wasn't a unique answer, so the answer must be the same regardless of whereabouts above the base the apex is - including the special case in which it's directly above one of the ends of the base. That would make the base and vertical two sides of a rectangle of lengths 12 and 18 inches respectively. That would make the area of the rectangle 12x18=216 square inches, and the triangle must be half of this, which is 108 square inches. Now do it properly: the rule is that the area of a triangle is half the base times the height, which is 12x18/2 = 12x9 = 108 square inches.

**Answer this Question**

**Related Questions**

geometry - A triangle's base is 14 inches less than 2 times its height. If h ...

geometry - The base of a triangle is (x + 16)inches and its height is (x + 9) ...

GeOmEtRy!!! - a triangle has an area of 35 square inches. The base of the ...

Algebra - A triangle has an area of 60 in^2. Its base is 10 inches and its ...

Math - A rectangular solid has a base area of 43.3 sq inches and a height of 50 ...

geometry - the base of a right triangular prism has a width of 8 inches and a ...

Math - The area A of a triangle is given by the formula A=1/2bh If the base of ...

Math - The area A of a triangle is given by the formula A=1/2bh If the base of ...

Geometry - We have a triangular prism that has the following characteristics. It...

geometry - If the height of a triangle is one inch more than twice its base, and...