Math Review

What is the area of the shaded region (green)?

• 361 cm

• 144 cm

• 217 cm

• 289 cm

Answer explanation

The area for the entire shape is 19 x19 =361. The unshaded region is 12 x12= 144. Subtract the unshaded region from the entire shape, 361-144= 217

What is the area of the shaded region (pink)

• 340 yd

• 420 yd

• 280 yd

• 260 yd

Answer explanation

The area for the entire shape is 17x20=340. The unshaded region is10x8=80. Subtract the unshaded region from the entire shape, 340-80= 260

What is the area of the shaded (purple) region?

• 361 mm

• 281 mm

• 289 mm

• 460 mm

Answer explanation

The area for the entire shape is 19x19=361. The unshaded region is 9x8=72. Subtract the unshaded region from the entire shape, 361-72=289

What is the area of the shaded region (blue)?

• 81 mi

• 225 mi

• 144 mi

• 174 mi

Answer explanation

The area for the entire shape is 15 x 15 = 225. The unshaded region is 9x9=81. Subtract the unshaded region from the entire shape, 225-81= 144

Done