TEKS.MATH.8.10D

Two cans are similar with a ratio of 87:100. If the surface area of the smaller can is 51.84 in. ², what is the approximate surface area of the larger can to the nearest hundredth?

• about 68.49 in. ²
• about 42.93 in. ²
• about 59.59 in. ²
• exactly 64.84 in. ²

Tags

TEKS.MATH.8.7B

TEKS.MATH.8.3A

TEKS.MATH.8.10D

Two spheres have a scale factor ratio of 1:3.  The smaller sphere has a surface area of 16 ft²_.  Find the surface area of the larger sphere.

• 48 ft²
• 144 ft²
• 432 ft²
• 32 ft²

Tags

TEKS.MATH.8.7B

TEKS.MATH.8.10D

A painting is 2 in tall and 3 in wide. If it is enlarged to a width of 15 in then how tall will it be?

• 8 in
• 30 in
• 20 in
• 10 in

Tags

TEKS.MATH.8.10D

Find the ratio (blue to red) of the area.

• 4/7
• 7/4
• 49/16
• 16/49

Tags

TEKS.MATH.8.10D

Which statement is true?

• A
• B
• C
• D

Tags

TEKS.MATH.8.10D

A triangle is dilated by a scale factor of 2. If the original area was 24, what will be the new area?

• 24
• 2
• 12
• 48

Tags

TEKS.MATH.8.10D

The area of a triangle is 20 square units. If the triangle is dilated by a scale factor of 2, which statement is true?

• The area of the new triangle will be 2 times the area of the old triangle.
• The area of the new triangle will be 3 times the area of the old triangle.
• The area of the new triangle will be 4 times the area of the new triangle.
• The two triangles will have the same area.

Tags

TEKS.MATH.8.3C

TEKS.MATH.8.10D

A square is dilated by a scale factor of 4.3. Which statement is true?

• The perimeter of the new square will be 18.49 times the perimeter of the old square.
• The perimeter of the new square will be 3 times the perimeter of the old square.
• The area of the new square will be 4.3 times the area of the old square.
• The area of the new square will be 18.49 times the area of the old square.

Tags

TEKS.MATH.8.10D

If a shape is dilated, how do you find the new area?

• You multiply the old area by the scale factor used in the dilation.
• You square the scale factor used in the dilation. Then multiply the old area by the squared scale factor.

Tags

TEKS.MATH.8.10D

Find the area.

• 18 square units

• 16 square units

• 24 square units

• 20 square units

Tags

TEKS.MATH.8.10D