Circles VA Sol

Which line segment is a radius of the circle?

• QR

• SR

• QT

• TR

Answer explanation

The line segment SR is a radius of the circle because it connects the center of the circle to a point on the circle, which is a characteristic of a radius.

Wayne and Dani both drew congruent circles and marked the center points as Q. They each drew a line segment inside their circle as shown. Which statement best describes the line segments in Wayne's and Dani's circles?

• Wayne’s line segment shows a diameter, and Dani’s line segment shows a radius.

• Wayne’s line segment shows a radius, and Dani’s line segment shows a diameter.

• Wayne’s line segment shows a diameter, and Dani’s line segment shows a chord.

• Wayne’s line segment shows a chord, and Dani’s line segment shows a diameter.

Answer explanation

The correct choice is Wayne’s line segment shows a radius, and Dani’s line segment shows a diameter, as the line from the center to the edge is a radius, and the line across the circle is a diameter.

If the area of a circle is 25 π in² , then the diameter is?

• 10 in

• 5 in

• 25 in

• pi in

Tags

CCSS.7.G.B.4

If the circumference of a circle is 22 π ft, what is the radius?

• 22 ft

• 11ft

• π ft

• no ft

Tags

CCSS.7.G.B.4

Which formula do you use to find the area of the circle?

• C=πd

• C =2π r

• A=π r²

• A = 2 π r

Tags

8.6A

8.7.A

This is the _____ for area of a circle.

• Distance

• Formula

• Diameter

• Radius

Tags

CCSS.7.G.B.4

Find the area of the circle.

• 16.7 cm²

• 18.7 cm²

• 12.6 cm²

• 10.2 cm²

Tags

CCSS.7.G.B.4

A circle has a radius of 7 cm. Calculate its area. Round to the nearest whole number.

Tags

CCSS.7.G.B.4

Find the area of the circle.

• 56.52 in²

• 254.34 in²

• 1017.36 in²

• 113.04 in²

Tags

CCSS.7.G.B.4

find the area of the circle with radius 3 cm below.

• 100 cm²

• 225 cm²

• 9 cm²

• 28.26 cm²

Tags

CCSS.7.G.B.4