Question

solve this question ​

Answer 1

what is the area of pond ?

( D ) 2000m2

Answer 2

Answer:

d) 2000m²  --- 18.1

180x - 8x² = 1184m² --- 18.2

Step-by-step explanation:

18.1

Area of pond = length * breadth

= 40m * 50m

=2000m²

d) 2000m²

18.2

So there are 4 rectangles formed as given in figure

2[(50 - 2x)*x] - Area of 2 rectangles of side 50m (casual talk the side is not 50m the side which is facing 50m)

2[(40 - 2x)*x] - Area of the 2 other rectangles

So total =

2[(50 - 2x)*x] + 2[(40 - 2x)*x]

=2[50x - 2x²] + 2[40x - 2x²]

= 100x - 4x² +80x - 4x²

=180x - 8x² = 1184m²

I ASSUME U ONLY NEEDED THE ANSWER OF FIRST 2 (AS THESE ARE LONG ANSWERS)