Question

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Answer 1

Answer:

Step-by-step explanation

1ha=10000square meter

2.6ha=2.6×10000square meter

2.6ha=26000squaremeter

Base=26meter

Area =1\2×base ×altitude or height

26000=26×altitude

Altitude =26000÷26

Altitude=1000

Answer 2

$\bold {\huge {\underline {\red {BONJOUR, \: DI}}}}$

$<b><i>Di, I remembered that once u only helped me when I was in dire need. That help was incredible. Though I couldn't match that, but I'll try my level best to give the best answer. I just hope that it may help you.. </b></i>$

And, there it goes.. ➡️⬇️

${\huge {\mathfrak {Answer :-}}}$

✨ $\bold {\huge {1}}$

▪️2.6 ha = 26000 sq.m

▪️Then,

Let the altitude be 'h'.

▪️So,

1/2 * 26 * h = 26000.

Or, h = 26000/13 = 2000.

♦️ $<b>Hence , altitude is 2000 m. ✔️</b>$

✨ $\bold {\huge {2}}$

▪️4.5 m = 450 cm ; 3 m = 300 cm.

▪️Then,

Area of the 2 windows

= 2 * [(50 * 80) + (1/2 * 20 * 80)] sq.cm

= 2 * [4000 + 800] sq.cm

= 2 * 4800 = 9600 sq.cm

▪️Now,

Area of the wall

= [450 * 300] - 9600 sq.cm

= 135000 - 9600 sq.cm

= 125400 sq.cm

= 12.54 sq.m

▪️So,

Cost of painting

= Rs. (12.54 * 15)

= Rs. 188.10

♦️ $<b>Hence, The cost of painting the wall is Rs. 188.10 ✔️</b>$

✨ $\bold {\huge {3}}$

▪️Radius = 28 cm.

▪️Then,

Circumference of the circle

= 2 * $\pi$ * 28 cm

= 2 * 22/7 * 28 cm

= 176 cm

▪️Therefore,

Perimeter of the square

is 176 cm.

▪️Now,

Let the side of the square be 'x'.

▪️By condition,

4x = 176.

Or, x = 44.

♦️ $<b>Hence, The length of the side of the square is 44 cm. ✔️</b>$

✨ $\bold {\huge {4}}$

(i)

▪️First split them into 3 rectangles, horizontally.

▪️Then,

Area of upper one

= 2 * [11 - 2 - 2 - 2 - 2] sq.cm

= 2 * 3 = 6 sq.cm

▪️Now,

Area of the middle one

= 2 * [11 - 2 - 2] sq.cm

= 2 * 7 = 14 sq.cm

▪️And,

Area of Lower one

= 2 * 11 = 22 sq.cm

▪️So,

Total area

= (22 + 14 + 6) sq.cm

= 42 sq.cm

♦️ $<b>Hence, The area of the figure is 42 sq.cm ✔️</b>$.

(ii)

▪️Split the figure into 3 rectangles, vertically

▪️Then,

Area of the west one (xD..)

= 4 * 1 = 4 sq.cm

▪️Now,

Area of the middle one

= 3 * (1 + 1 + 2) sq.cm

= 3 * 4 = 12 sq.cm

▪️And,

Area of the east one

= 4.5 * 1 = 4.5 sq.cm

▪️So,

Total area

= (4.5 + 4 + 12) sq.cm

= 20.5 sq.cm

♦️ $<b>The total area of the figure is 20.5 sq.cm✔️ </b>$.

${\huge {\mathfrak {\red {That's\: it..}}}}$

${\huge {\blue {Thanks..}}}$