Question

A shopkeeper sells two types of plates. A square plate with a side of 19cm costs ₹25 and a circular
plate with a diameter of 21 costs ₹25. Which plate has more area?
please explain too

Answer 1

Answer:

If the shopkeeper has a square plate with a side of 19 cm and a circular plate with a diameter of 21 cm, then the area of the circular plate is larger than the square plate

Step-by-step explanation:

Given

Side of the square plate = 19cm

Area of the square plate = side*side = 19*19 = $361 cm^{2}$

Diameter of circular plate = 21 cm

The radius of the plate = 21/2 cm

Area of the plate =

$\pi r^{2} \\\\= \frac{22}{7} *\frac{21}{2} *\frac{21}{2} \\\\\\= \frac{22*3*21}{4} \\\\=\frac{1386}{4} \\\\=346.5 cm^{2}$

So the area of the circular plate is larger than the square plate