Question

Please answer the questions​

Answer 1

ANSWER 1 :

Option 3)

Explanation :

We have to Divide The Swimming Pool into two Geometrical Shapes

• Rectangle

• Triangle

Dimensions of Rectangular Shape = 12 m and 1 m

$\bigstar \boxed{ \red{ \sf \: Area \: of \: Rectangle = Length \times Breadth }}$

$\longrightarrow \sf \: 12 \: m \times 1 \: m$

$\longrightarrow \sf \: 12 \: {m}^{2}$

Dimensions of Triangular Shape = 12 m (Base), 4 m - 1 m = 3 m (Altitude)

$\bigstar \boxed{ \red{ \sf \: Area \: of \: Triangle= \dfrac{1}{2} \times base \times height }}$

$\longrightarrow \sf \: \dfrac{1}{2} \times 12 \times 3$

$\longrightarrow \sf \: 18 \: {m}^{2}$

Total Area = 12 + 18 = 30 m^2

Total Volume = 30× 9 = 270m^3

Hence, Option 3) is correct answer!

__________________________

ANSWER 2 :

Option 1)

Explanation :

Perimeter of One Face = 20 cm

$\bigstar \boxed{ \red{ \sf \: Perimeter \: of \: cube =4 \times side }}$

$\longrightarrow \sf \: 20 = 4 \times side$

$\longrightarrow \sf \: Side \: = \cancel\dfrac{20}{4}$

$\longrightarrow \sf \: Side \: = 5 \: cm$

$\bigstar \boxed{ \red{ \sf \: Volume \: of \: Cube = {side}^{3} }}$

$\longrightarrow \sf \: {5}^{3}$

$\longrightarrow \sf \: 5 \times 5 \times 5$

$\longrightarrow \sf \:125 {cm}^{3}$

Hence,Option 1) is correct Answer!