Geometry Area and Perimeter

Find the perimeter of this triangle.

• 240 ft

• 56 ft

• 66 ft

• 120 ft

What is the perimeter of this square?

• 12 m

• 9 m

• 9 m²

• 6 m

What is the perimeter of this rectangle?

• 24 mi²

• 20 mi

• 12 mi²

• 10 mi

Find the area of the trapezoid.

• 69.5 square kilometers

• 40.6 square kilometers

• 114 square kilometers

• 179.4 square kilometers

Answer explanation

To calculate the area of a trapezoid, add the top and bottom sides together...divide that number by 2...and multiply the product by the height.

A=1/2(base 1 + base 2)xHeight

The figure shows a circle inside a triangle.  Which equation could be used to find the area of the shaded region?

• = ½bh - 2πr

• = πr² - ½bh

• = ½bh - πd

• = ½bh - πr²

What would you need to do to find the perimeter of the triangle? Explain.

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Find the area.

• 27.3 mi²

• 52.6 mi²

• 26.3 mi²

• 54.6 mi²

Find the area of the triangle.

• 31.5 units²

• 63 units²

• 77 units²

• 38.5 units²

Given the parallelogram, find the area. Hint - find the height first.

• 98

• 196