Question

Pizza factory has come out with two kinds of pizzas. A square pizza of side 45 cm costs Rs.150 and a circular pizza of diameter 50 cm costs Rs.160. Which pizza is a better deal?

Answer 1

Given side a square pizza = 45 cm
$\therefore$ Area of a square pizza $=(side{)}^2=(45{)}^2=2025c{m}^2$
Diameter of circular pizza = 50 cm
$\therefore$ Radius $=\frac{50}{2}=25cm[\because radius=\frac{diameter}{2}]$
Now, area of the circular pizza $=\frac{22}{7}\times 25\times 25$
$=\frac{22}{7}\times 625=\frac{13750}{7}=1964.28c{m}^2.$
$\therefore$ Price of 1 cm square pizza $=\frac{2025}{150}=Rs.13.5$
and price of 1 cm square circular pizza $=\frac{1964.28}{160}$
= Rs.12.27
Hence, the circular pizza is a better deal.