Write the ratio in the reduced form of radius to the diameter of a circle
1:2
1:1
2:1
2:2
Answers
Answer:Part (i)
Let the radius of the circle be r.
The diameter of the circle =2r
According to the question,
=
2r
r
=
2
1
Part (ii)
The length of the rectangle =4 cm
The breadth of the rectangle =3 cm
So, the diagonal of the rectangle will be
=
3
2
+4
2
=
25
=5 cm
According to the question,
=
4
5
Part (iii)
The side of the square 4 cm
So, the perimeter of the square will be
=4×side
=4×4=16 cm
And the area of the square will be
=side
2
=4
2
=16 cm
According to the question,
=
16
16
=1
Hence, this is the answer.
Part (i)
Let the radius of the circle be r.
The diameter of the circle =2r
According to the question,
=
2r
r
=
2
1
Part (ii)
The length of the rectangle =4 cm
The breadth of the rectangle =3 cm
So, the diagonal of the rectangle will be
=
3
2
+4
2
=
25
=5 cm
According to the question,
=
4
5
Part (iii)
The side of the square 4 cm
So, the perimeter of the square will be
=4×side
=4×4=16 cm
And the area of the square will be
=side
2
=4
2
=16 cm
According to the question,
=
16
16
=1
Hence, this is the answer.
Step-by-step explanation: