+1 Q3 Area and Circumference

Which is the correct area formula for Triangles?

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• rectangle

• triangle

• parallelogram

• quadrilateral

Answer explanation

The formula A=b*h represents the area of a rectangle or a parallelogram, making both choices correct.

Which is the correct area formula for Trapezoids?

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What is the area of this rectangle?

• 40 square feet

• 28 feet

• 16 square feet

• 100 square feet

Answer explanation

The correct area of the rectangle is 40 square feet, which is the first answer choice provided.

How do you find the AREA of a TRIANGLE?

• Length x Width

• Base x Height divided by 2

• 1/3 (Length x width)

• Base x Height

Answer explanation

To find the area of a triangle, you multiply the base by the height and then divide the result by 2. So, the correct formula is Base x Height divided by 2.

Find the area of the triangle.

• 44.4 mm²

• 5.92 mm²

• 8.88 mm²

• 17.76 mm²

Answer explanation

The correct answer is 8.88 mm². To find the area of a triangle, use the formula: Area = 0.5 * base * height. Substituting the values given, Area = 0.5 * 6 * 2.96 = 8.88 mm².

What is the area of the parallelogram above?

• 13 cm²

• 28.5 cm²

• 45.6 cm²

• 40 cm²

Answer explanation

The area of a parallelogram is calculated by multiplying the base by the height. In this case, the base is 8 cm and the height is 5 cm, so the area is 8 cm * 5 cm = 40 cm^2. Therefore, the correct answer is 40 cm^2.

What is the area of this triangle?

• 19.8 km²

• 37.8 km²

• 18.9 km²

• 35 km²

Answer explanation

The correct answer is 18.9 km^2, which is calculated using the formula: Area = 0.5 * base * height.

Greyson and Preston have a piece of paper that is 10 inches by 9 inches.  What is the area of the paper?

• 100 sq. in.

• 79 sq. in.

• 90 sq. in.

• 90 in.

Answer explanation

To find the area of the paper, multiply the length by the width: 10 inches x 9 inches = 90 sq. in. Therefore, the correct answer is 90 sq. in.

What is the area of this triangle?

• 31.5 units²

• 63 units²

• 77 units²

• 38.5 units²

Answer explanation

The correct area of the triangle is calculated using the formula: Area = 0.5 * base * height. Given base = 9 units and height = 7 units, Area = 0.5 * 9 * 7 = 31.5 units^2.