24 cm

7.2cm

3.6 cm

Mdm woo idk how to do the picture

Smaller circle:

Calculator pi(rounded to the nearest hundredth) - 7.85

22/7(rounded to the nearest hundredth) - 7.86

3.14 - 7.85

Bigger circle:

Calculator pi(rounded to the nearest hundredth) - 23.56

22/7(rounded to the nearest hundredth) - 23.57

3.14 - 23.55

2.5cm

Bigger circle:

7.5cm

1.25cm

Bigger circle:

3.75cm

10 x 3 =30 314+ 30 = 344 Ans:344cm2

3.14 x 20 = 62.8

10+10+3+3=26

62.8 +26 = 88.8 Ans:88.8cm

3.14x4x4=43.9

9.5x1.5=14.2

14.2+43.9=58.

It is 58.1cm2

Perimeter

3.14x8=25.12

(9.5x2)+(1.5x2)=22

25.1+22=45.1

It is 45.1cm.

Perimeter:

11+3+11+3=28

3.14×10=31.4

31.4+28=59.4

59.4-3×2=53.4

Ans:it is 53.4cm

Area:

11×3=33

3.14×5×5=78.5

33+78.5=111.5

And: it is 111.5cm²

area：3.14*2.5*2.5=19.625

3.14*2*2=12.56

19.625-12.56=7.065

the area is 7.065cm2

circumference:

3.14*5=15.7

the circumference is 15.7cm

3.14x5x5=78.5

38.13+78.5=116.63

2.3+8.7+8.7=19.7

39.25+(2x15)=69.25

Perimeter:

1/2x3.14x10=15.7

15.7+2+15+1+15=48.7

Perimeter

39.26

Area

3.14×4×4=50.24

3.14×1×1=3.14

3.14÷2=1.57

5×1=5

5+1.57+50.24=56.81

4.1x4=16.4（perimeter of square）

3.14x2.5=7.85（circumference of circle）

Area

4.1x4.1=16.81（area of square）

3.14x1.25x1.25=4.90625（area of circle）

1/2x3.14x5x5=39.25

39.25+10=49.25

Ans: 49.25cm2

Perimeter

1/2x3.14x10=15.7

15.7+10=25.7

Ans: 25.7

Perimeter

22/7 x 10=31.42

11+11=22

3+3=6

22+6=28

31.42+28=59.42

Ans: It is 59.42cm

Area

3 x 11=33

22/7 x 5 x 5=78.57

78.57+33=111.57

Ans: It is 111.57cm2

Circle = 3.14 x 10 x 10 = 314 (sq cm)

Rectangle = 14 x 2.5 = 35 (sq cm)

Semi circle = 3.14 x 1.25 x 1.25 / 2 = 2.5 (sq cm)

Triangle = 2.5 x 2 / 2 = 2.5 (sq cm)

Total = 314 + 35 + 2.5 + 2.5 = 354 ( sq cm)

Perimeter

Circle = 3.14 x 20 = 62.8

62.80 - 2.5 - 2.5 = 57.8 cm

Semi circle = 3.14 x 2.5 / 2 = 3.9 cm

Total = 57.8 + 3.9 + 14 + 14 + 2.5 + 2.5 = 94.7 cm

3.14 x 2.5 x 2.5 = 19.625

6 x 1.5 = 9

19.625 + 9 = 28.625

28.625 ≈ 28.6

perimeter:

3.14 x 5 = 15.7

6 + 1.5 + 6 + 1.5 = 15

15.7 + 15 = 30.7

1/2 x 3.14 x 5 =7.85

15 + 2 + 15 + 2 =34

7.85 + 34 =41.85

41.85 + 10 =51.85

Ans: 51.85

Area

1/2 x 3.14 x 2.5 x 2.5 =9.813

15 x 2 =30

9.813 + 30 =39.813

Ans: 39.813

Circle = 3.14 x 10 x 10 = 314 (sq cm)

Semi circle = 3.14 x 1.25 x 1.25 / 2 = 2.5 (sq cm)

Rectangle = 14 x 2.5 = 35 (sq cm)

Triangle = 2.5 x 2 / 2 = 2.5 (sq cm)

Total = 314 + 2.5 + 35 + 2.5 = 354 (sq cm)

Perimeter

Circle = 3.14 x 20 = 62.8

62.8 - 2.5 - 2.5 = 57.8 (cm)

Semi circle = 3.14 x 2.5 / 2 = 3.9 (cm)

Total = 57.8 + 3.9 + 2.5 + 2.5 + 14 + 14 = 94.7 (cm)

10×π×1/2=15.7

15.7+10=25.7 (Perimeter of semicircle)

15+2.8+15+2.8=35.6 (Perimeter of rectangle)

25.7+35.6=61.3 (Total perimeter/Answer)

Area:

10÷2=5

5×5×π×1/2=39.25 (Area of semicircle)

15×2.8=42 (Area of rectangle)

39.25+42=81.25 (Area in total/Answer)

perimeter = 8 + 8 + 5 = 21

pi x 10 =31.4(round off to 1 decimal place )

21 + 31.4 =52.4

thorax : triangle

13.5+12.5+12=38

Perimeter

3.14 x 7.6 = 23.864 (circumference of circle)

23.864 - 4.5 = 19.364

19.364 + 8 + 4.5 + 8 = 39.864 (perimeter of figure)

The perimeter is 39.864cm.

Area

7.6 divide by 2 is 3.8 (radius)

3.14 x 3.8 x 3.8 = 45.3416 (area of circle)

8 x 4.5 = 36 (area of rect.)

36 + 45.3416 = 81.3416 (area of figure)

The area is 81.3416cm2

10pii+10.5x2+2.5=54.91592654

Area=piix5.25x5.25+10.5x2.5=112.2151475

6 * Pi =18.8 (cm/rounded to 1 decimal place)

18.8-4.4=14.4(cm)

14.4+11.3+11.3+4.4=41.4(cm)

It is 41.4cm

Area

6÷2=3 (radius of circle)

Pi*3*3=28.3(cm2)

11.3*4.4=49.72(area of rectangle)

49.72+28.3=78.02

~78.0 (cm2/rounded to 1 decimal place)

It is 78.0 cm2

Perimeter:53.5cm

Area: 11 * 3 = 33 33+78.5=111.5

3.14 * 5 * 5 = 78.5

And: it is 111.5cm²

10 x 3 =30 314+ 30 = 344 Ans:344cm2 perimeter;32