Apizza parlor offers pizzas with diameters of 8 in, 10 in, and 12 in. find the area of each size pizza. round to the nearest tenth. if the pizzas cost $9, $12, and $18 respectively, which is the better buy

Area of Pizza 1 = 50.24 sq. inch, Area of Pizza 2 = 78.5 sq. inch, Area of Pizza 3 = = 113.04 sq. inch

Thus, the pizza with diameter 8 inch is better to buy.

Step-by-step explanation:

We are given three pizzas with three different diameters.

= 8 inch ⇒ = 4 inch

= 10 inch ⇒ = 5 inch

= 12 inch ⇒ = 6 inch

Area of Circle = πr², where r is the radius of circle.

Area of Pizza 1 = 3.14 × 4 × 4 = 50.24 sq. inch

Area of Pizza 2 = 3.14 × 5 × 5 = 78.5 sq. inch

Area of Pizza 3 = 3.14 × 6 × 6 = 113.04 sq. inch

We are also given cost for each pizza.

= $9

= $12

= $18

To choose which one is a better pizza to buy, we calculate cost per square inch.

Cost per sq. inch =

Pizza 1 = = 0.18$ per sq. inch

Pizza 2 = =  0.15$ per sq. inch

Pizza 1 = =  0.16$ per sq. inch

Thus, the pizza with diameter 10 inch is better to buy.

correct answer:

a + bi

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47