Question 1

Identify the polygon with

Question

Question 1:

Identify the polygon with

vertices P(2,−2)

P2,-2, Q(4,2)

Q4,2, R(6,2)

R6,2, and S(4,−2)

S4,-2, and then find the perimeter and area of the polygon.

Question 2:

Identify the area of the polygon with vertices B(3,2)

B3,2, C(7,−2)

C7,-2, D(2,−4)

D2,-4, and E(1,−2)

E1,-2.

Question 3:

Both diagonals of a kite are muiplied by 1/3, Which of the following describes the effect of this change on the area?

The area is muiplied by 1/3.

The area is muiplied by 1/9.

The area is muiplied by 9.

The area is muiplied by 3.

Question 4:

The base length of a triangle is muiplied by 1/4, Which of the following describes the effect of this change on the area?

The area is muiplied by 1/4.

The area is muiplied by 1/16.

The area is muiplied by 4.

The area is muiplied by 16.

Question 5:

Which of the following shows that the two composite figures cover the same area?

For both figures, A = 4 + 4 + 3 + 3 = 14 units2.

For both figures, A = 4 + 3 + 3 + 2 = 12 units2.

For both figures, A = 4 + 3 + 3 + 3 = 13 units2.

For both figures, A = 4 + 4 + 3 + 2 = 13 units2.

Question 6:

A square has side length of 16.5 in, If the area is muiplied by 9, what happens to the side length?

The side length is muiplied by 4.5.

The side length is doubled.

The side length is muiplied by 9.

The side length is tripled.

Question 7:

The radius of a circle is muiplied by 1/4, Which of the following describes the effect of this change on the area?

The area is muiplied by 1/16.

The area is muiplied by 1/4.

The area is muiplied by 1/8.

The area is muiplied by 4.

Question 8:

Which of the following is the best estimate of the area of the irregular shape?

20.5 units2

18 units2

19 units2

25.5 units2

Question 9:

Janet decides to sow grass in a rectangular plot of her garden that has a length of 30ft and height of 25ft. It costs her $9.50

$9.50 per square foot for sowing the grass. If she wants to sow grass in a plot with half the base and half the height, she will have to pay $3,562.50

$3,562.50. Is this reasonable? Explain.

No; if the dimensions are halved, the area is muiplied by 1/4.

Yes; if the dimensions are halved, the area is muiplied by 2.

Yes; if the dimensions are halved, the area is muiplied by 1/4.

No; if the dimensions are halved, the area is muiplied by 4.

Question 10:

A circle has a radius of 5 cm. If the area is tripled, what happens to the circumference?

Math