SaiBook.us Geometry

Home Course Section

Register Enroll

Lesson Example Discussion Quiz: Class Homework

Quiz Discussion

Title: Circles

Grade: 8-a Lesson: S1-L1

Explanation: Let us discuss a few questions on this topic and review the answers to every question.

Quiz: Discussion in Class

Problem Id	Problem	Options
Steps 1	A circular garden has an area of 400 square meters. Find the radius and circumference of the garden.	A) 11.28 m and 70.88 m B) 11.23 m and 70.83 m C) 11.82 m and 70.91 m D) 11.32 m and 70.82 m
Steps 2	The circumference of a circle is equal to its area. Find the diameter of the circle.	A) 2 units B) 5 units C) 4 units D) 6 units
Steps 3	An arc length in a circle is 10 cm, and the central angle corresponding to the arc is 60 degrees. Find the radius of the circle.	A) 9.45 cm B) 9.55 cm C) 9.64 cm D) 9.59 cm
Steps 4	An arc length in a circle is 20 cm, and the central angle corresponding to the arc is 120 degrees. Find the radius of the circle.	A) 9.59 cm B) 9.55 cm C) 9.57 cm D) 9.058 cm
Steps 5	A circular pond is of diameter 17.5 m. It is surrounded by a 2 m wide path. Find the cost of constructing the path at the rate of Rs. 25 per square metre (Use π = 3.14).	A) Rs. 3061 B) Rs. 3062.5 C) Rs. 3061.5 D) Rs. 3062

Problem Id

Problem

Options

Steps 1

A circular garden has an area of 400 square meters. Find the radius and
circumference of the garden.

A) 11.28 m and 70.88 m

B) 11.23 m and 70.83 m

C) 11.82 m and 70.91 m

D) 11.32 m and 70.82 m

Steps 2

The circumference of a circle is equal to its area. Find the diameter
of the circle.

A) 2 units

B) 5 units

C) 4 units

D) 6 units

Steps 3

An arc length in a circle is 10 cm, and the central angle corresponding
to the arc is 60 degrees. Find the radius of the circle.

A) 9.45 cm

B) 9.55 cm

C) 9.64 cm

D) 9.59 cm

Steps 4

An arc length in a circle is 20 cm, and the central angle corresponding
to the arc is 120 degrees. Find the radius of the circle.

A) 9.59 cm

B) 9.55 cm

C) 9.57 cm

D) 9.058 cm

Steps 5

A circular pond is of diameter 17.5 m. It is surrounded by a 2 m wide
path. Find the cost of constructing the path at the rate of Rs. 25 per
square metre (Use π = 3.14).

A) Rs. 3061

B) Rs. 3062.5

C) Rs. 3061.5

D) Rs. 3062