Question

A school started a campaign against the habit of taking junk food. Ten students were asked to prepare banners in a triangular shape. The sides of the banner are $112,78$ AND $50cm$. if cost of banners is $Rs3$ per $100cm2$, find the total cost of banners. What valye is being promoted in this question?

Answer 1

Area of each banner $=\frac{1}{2}\times 223\times 78=4368$

No of banner $=10$

total are $=43680$

cost of per $100sqcm$ banner $3Rs$

$1sqcm$ banner $\frac{3}{100}$

$43680sqcm$ banner $\frac{3}{100}\times 43680$

$=1310.4Rs$