Class 9

A traffic signal board indicating school ahead is an equilateral  triangle with side a. Find the area of the signal board  using herons formula if its perimeter is 130 cm . What will be the area of signal board? 

Rehana Banu's image
Rehana Banu
Nov. 22, 2017, 6:33 p.m.

Answers!

Davneet Singh's image
Davneet Singh
Nov. 22, 2017, 8:18 p.m.

Hello Rehana

Please check https://www.teachoo.com/1288/463/Ex-12.1--1---A-traffic-signal-board--indicating-SCHOOL-AHEAD/category/Ex-12.1/

 

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