The area of a triangle can be found by the formula

a = \frac{1}{2} \times b \times h

If the base of the triangle is 10 m, then the area would be,

a = \frac{1}{2}\times 10 \times 8.66 m = 43.3 m

I found an answer from www.quora.com

Why aren't we using solar power more? - Quora

A typical apartment may consume 6 Kw at any time so the building will require 600Kw electrical supply. The roof **area** available for solar PV panels is 800m2.

For more information, see Why aren't we using solar power more? - Quora

I found an answer from ntrs.nasa.gov

Surface Topography of the Greenland Ice Sheet from Satellite Radar ...

Solid **triangles** indicate **elevation** of second return when retracking algorithm **indicated** ... dulations of 5-**meter peak**-to-trough amplitude with **10**-kil-.

For more information, see Surface Topography of the Greenland Ice Sheet from Satellite Radar ...

I found an answer from www.khanacademy.org

**Area** of **triangles** (article) | Geometry | Khan Academy

**Math**: 6.G.A.1. Intuition for why the **area of a triangle** is one half of **base** times **height**. ... I **find math** in general fun, because it gets my brain working!

For more information, see **Area** of **triangles** (article) | Geometry | Khan Academy