Question

How much area of metal sheet is required to make an open cylindrical tank of radius 2.8m and height 120m ????

ANSWER IS: 2136.64m^2​

Answer 1

Step-by-step explanation:

open cylinder means lateral surface area.

Lateral surface area of a cylinder= 2πrh

$=2 \times \frac{22}{7} \times \frac{28}{10} \times 120 \\ = 14 \times 44\times 12 = 3696 {m}^{2}$

Answer 2

Answer:

Trigonometry, the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).