Question

can anyone pls solve this question plss
hope u will help me​

Answer 1

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Answer 2

$\sf\huge\bold{Solution}$

The volume of a cuboid of dimensions 31, 2m, and 3n is

1.Volume of cube is = length ×breadth×height

=>31×2m×3n=31×6mn=>181mn

c) 181mn is correct

2.(x+y)²+ (x-y)² =

Formula for (x+y)²=x²+y²+2xy

(x-y)²=>x²+y²-2xy

adding both Equation

x²+y²+2xy+x²+y²-2xy=2x²+2y²=2(x²+y²)

c)2(x²+y²) is correct

3.A triangular prism has

a.6 edge is correct

4.If the edge of a cube is tripled, then its surface area becomes_____ times.

b.9 times

Let's understand ,volume for Surface Area of cube is 6a² ( a is side /edge)

let the edge be x

if edge tripled then it becomes 3x

6a²=>6 (3x)²=>6×9x²

Here,9 times increasement

Extra shot =>

Let the edge be x

when it tripled = 3x

volume =(3x)³=27x³

hence,volume is 27 times increased.

5.The amount of space occupied by an object is called

c.Volume is correct