Question

Just number 1- please help! thank you!!

Answer 1

Explanation:

For no.1

sloution,

for small

`r = 2.5`

`\pi = 3.14`

Area(A1)=?

now,

A = π r²

A=3.14*2.5^2

A=19.6

A1=19.6cm^2

For,big square

L=10cm

A2=?

now,

A=L^2

A=10^2

A=100

A2=100cm^2

For shaded area

A=A2-A1

A=100-19.6

A=80.4cm^2

Answer 2

80.4

Explanation:

You have to first find the area of the circle which the formula for that is pi r^2. So you would set it up as 3.14 (2.5)^2 which you then would solve and get 19.625. Then, you find the area of the square which is length times width. So then you would multiply 10 and 10 and get 100. You then subtract 100 and 19.625 which gives you 80.375 but since it says round to the nearest tenth you'd get 80.4.