Tuesday

March 3, 2015

March 3, 2015

Posted by **Carmen** on Wednesday, March 9, 2011 at 8:10pm.

can someone help me on this one.. am stuck

- geometry -
**Henry**, Thursday, March 10, 2011 at 10:01pmA = (b/2) *h,

Multiply the base by 2 and get:

A = b*h,

So the area is doubled.

Let's calculate the area of the given

triangle.

A(1,1), B(9,1), C(5,5).

AB = 9 - 1 = 8 = base.

(AC)^2 = (5-1)^2 + (5-1)^2,

(AC)^2 = 16 + 16 = 32,

AC = sqrt32 = 5.66.

(b/2)^2 + h^2 = (AC)^2,

4^2 + h^2 = 32,

h^2 = 32 - 16 = 16,

h = 4.

A = (b/2) * h,

A = (8/2) * 4 = 16.

Double the base:

A = (16/2) * 4 = 32.

**Answer this Question**

**Related Questions**

Geometry - Describe the effect of each change on the perimeter and the area of ...

Algebra - I'm stuck!! Can someone please help me with this problem?? A triangle ...

geometry - 14. Question says that there is a triangle with a base of x units and...

geometry - Each base of an isosceles triangle measures 42 degrees, 30'. The base...

geometry - A right triangle has a base that is 2 more than twice the height. ...

geometry - the hight of a triangle is four times the length of the base. find ...

Algebra - How do you find the area of a shaded area in a triangle and assume the...

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

Precalculus - The sides of an isosceles triangle are 10 cm, 10 cm, and 12 cm. A ...

Math - consider a triangle with vertices (a,b), (c,d), (e,f), with the area of ...