Posted by **Ivan** on Sunday, January 16, 2011 at 12:43am.

a = 12 cm

b = 14 cm

h = 8 cm.

Compute the area. How many cm2?

- Geometry -
**MathMate**, Sunday, January 16, 2011 at 10:36am
You can use Heron's formula, which calculates the area of a triangle from the lengths of the three sides.

Let a,b,c=lengths of the three sides

s=(a+b+c)/2

Area of triangle

=sqrt(s(s-a)(s-b)(s-c))

Post your answer for a check if you wish.

- correction -
**MathMate**, Sunday, January 16, 2011 at 3:39pm
I believe the figure is a trapezoid. I have misread it as a triangle (with given sides a, b and c).

The area of a trapezoid (trapezium) is

(a+b)h/2

=(12+14)*8/2

=104

## Answer This Question

## Related Questions

- Geometry - Compute the area of the triangle. (Express answer in cm2) h = 6 cm b...
- geometry - 1. What is the lateral surface area of a square pyramid with side ...
- Geometry - 3. A department store sells small boxes in which customers can store ...
- 7th grade math please help Ms. Sue - 4. Find the area for a triangle: base 14, ...
- math - Find the area of a parallelogram with base b and height h. b = 82 cm h = ...
- math - Find the area of a triangle: base 14 cm, height 5.5 cm. 19.5 cm² 77 cm² ...
- math - Find the area of a parallelogram: base 5.2 cm, height 2.3 cm. 10.6 cm² 12...
- Algebra - Use 3.14 for Pi and round to the nearest tenth. Find the surface area...
- Math :) - Find the area of a parallelogram: base 5 cm, height 20 cm. 100 cm² 90 ...
- Math - Find the area for a triangle: base 14 cm, height 5.5 cm. 19.5 cm² 77 cm² ...

More Related Questions