Answer:

Total: 972 sq. ft.

Step-by-step explanation:

21' x 30' = 630 sq. ft. 7 paces

=21'

6 paces

= 18'

12 paces = 36'

18' x 36; = 648 sq. ft.

6 paces = 18'

10 paces = 30'

6 paces

= 18'

324 sq. ft.

648 sq. ft.

Problem:

Calculate the area of each diameter.

• 6.) 18 mm
• 7.) 28 m
• 8.) 14 cm
• 9.) 6 m
• 10.) 10ft ​

Answer:

[tex]\Large\underline{\boxed{{\tt6.)\: 254.34\:mm^{2} }}}[/tex]

[tex]\Large\underline{\boxed{{\tt7.) \: 615.54\:m^{2} }}}[/tex]

[tex]\Large\underline{\boxed{{\tt8.) \: 153.86\:cm^{2} }}}[/tex]

[tex]\Large\underline{\boxed{{\tt9.) \: 28.26\:m^{2} }}}[/tex]

[tex]\Large\underline{\boxed{{\tt10.)\: 78.5\:ft^{2} }}}[/tex]

Solution:

In finding the area of a circle, we need to use this formula: A = πr², where "π" is pi, which is approximately equal to 3.14, and "r" is the radius.

Note that if the given is diameter, divide it by 2 to get the radius. If you already know the radius after dividing it, you can proceed to the given formula.

Lets solve the given problem!

Solution for number 6

• [tex]\large \tt {A = \pi r^{2} }[/tex]

• [tex]\large \tt {A = 3.14 \times\: 9^{2}}[/tex]

• [tex]\large \tt {A = 3.14 \times\: 81}[/tex]

• [tex]\large \tt {A = 254.34}[/tex]

Solution for number 7

• [tex]\large \tt {A = \pi r^{2} }[/tex]

• [tex]\large \tt {A = 3.14 \times\: 14^{2}}[/tex]

• [tex]\large \tt {A = 3.14 \times\: 196}[/tex]

• [tex]\large \tt {A = 615.44}[/tex]

Solution for number 8

• [tex]\large \tt {A = \pi r^{2} }[/tex]

• [tex]\large \tt {A = 3.14 \times\: 7^{2}}[/tex]

• [tex]\large \tt {A = 3.14 \times\: 49}[/tex]

• [tex]\large \tt {A = 153.86}[/tex]

Solution for number 9

• [tex]\large \tt {A = \pi r^{2} }[/tex]

• [tex]\large \tt {A = 3.14 \times\: 3^{2}}[/tex]

• [tex]\large \tt {A = 3.14 \times\: 9}[/tex]

• [tex]\large \tt {A = 28.26}[/tex]

Solution for number 10

• [tex]\large \tt {A = \pi r^{2} }[/tex]

• [tex]\large \tt {A = 3.14 \times\: 5^{2}}[/tex]

• [tex]\large \tt {A = 3.14 \times\: 25}[/tex]

• [tex]\large \tt {A = 78.5}[/tex]