A triangular banner has sides 11 m, 15 m and 16 m.
MATHEMATICS · Multi-part · CBSE · Mathematics · Heron's Formula · Heron's Formula
Problem
A triangular banner has sides 11 m, 15 m and 16 m.
(i) Calculate the area of the banner.
(ii) The banner is to be edged with decorative ribbon along its entire perimeter. Find the length of ribbon required.
(iii) If the cloth costs Rs. 40 per square metre and the ribbon costs Rs. 12 per metre, compute the total cost of making the banner.