Question

find the volume of a right circular cylinder area of base = 154 cm square height = 1.5 CM

Answer 1

Here is the solution:  

We will use algebraic formula (a + b) (a - b) = a^2 + b^2

According to question we have,

30.5*29.5 = (30 + 0.5)*(30 - 0.5)

Where a = 30 and b = 0.5

= (30) ∧2-(0.5) ∧2

= 900-0.25

= 899.75

Therefore, answer, the product of 30.5*29.5 without actual multiplication is 899.75

Answer 2

$\huge Hello$$\huge friends,$

30.05 * 29.5 = ( 30+0.5 ) ( 30 - 0.5 )

(30)² - (0.5)²

900 - 0.25

899.75

$\huge BeBrainly$

$\huge @techybhai$