Question

give two examples of economical​

Answer 1

⚘Question:—

❥A cylindrical tank of diameter 21 cm and height 84 cm is filled with milk. How many glasses of diameter 7cm and height 14 cm can be filled with this milk?

⚘Answer࿐

$\small\bf \pink{\fbox\purple{Given}}$

Cylindrical tank with Diameter= 21cm [R=D/2=21/2]

Cylindrical tank with Height= 84cm

Cylindrical Glass with Diameter= 7cm [r=D/2=7/2]

Cylindrical Glass with Height= 14cm

ㅤ_________________________________

$\small\bf \green{\fbox\purple{To \: Find \: Out}}$

》How many glasses of diameter 7cm and height 14cm can be filled with this milk?

____________________________________________

$\small\bf \orange{\fbox\purple{Solution:}}$

Dimensions of Cylindrical tank:-

Radius = (21/2)cm

Height = 84cm

ㅤㅤVolume of tank=Volume of Cylinder

Volume of cylinder = πR²h

[22/7×(21/2)²×84] cm³

(22/7×21/2×21/2×84) cm³

(8,14,968/28) cm³

⚘29,106cm³

Dimensions of Cylindrical tank:-

Radius = (7/2)cm

Height = 14cm

ㅤVolume of tank=Volume of Cylinder

Volume of Cylinder= πr²h

[22/7×(7/2)²×14] cm³

(22/7×7/2×7/2×14) cm³

(15,092/28) cm³

⚘539 cm³

ㅤㅤㅤSo, Number of Glasses used to fill the tank=

ㅤㅤㅤㅤ(Volume of Cylinder) ÷ (Volume of Glasses)

ㅤㅤㅤㅤㅤㅤㅤ29,106cm³/539cm³

ㅤㅤㅤㅤㅤㅤㅤ=> 54 Glasses

ㅤㅤ❥⚘So, your answer was "54 Glasses"....

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ➢ ayush_here

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ➢⚘Thank You

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ➢⚘Mr_Majnu

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ______________

Answer 2

Answer:

A cheap brand of cleaner that works really well and provides good value is an example of something that might be described as economical. A person who is careful with his money and who doesn't spend foolishly is an example of someone who is economical. ... Careful with money so as not to spend too much; prudent; thrifty.