A square has an area of 120 cm . If it is cut from corner to corner into four right-angled triangles, what is the area of each triangle?
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60 cm2
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40 cm2
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30 cm2
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20 cm2
Q.3.
What is the formula for finding the area of a right-angled triangle?
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Area = base × height
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Area = 1⁄2 × base × height
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Area = 1⁄2 × base × height2
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Area = 1⁄4 × base × height
Q.4.
What is the area of a square whose sides are 1 metre long?
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1 m2
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10,000 cm2
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1 million mm2
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All of the above
Q.5.
What is the formula for finding the area of a circle?
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Area = π × r2
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Area = 2π × r
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Area = π × r3
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Area = (π × r)2
Q.6.
Two right-angled triangles, when put together, make a square with and area of 36 cm . What is the length of the base of each triangle (not the diagonal side)?
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24 cm
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18 cm
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12 cm
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6 cm
Q.7.
What is the formula for finding the circumference of a circle?
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Circumference = 2π x diameter
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Circumference = π x diameter
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Circumference = π x radius
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Circumference = π x radius2
Q.8.
A rectangle has a length of 8 cm and a width of 2 cm. What is its area in mm ?
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16 mm2
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16 cm2
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160 mm2
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1,600 mm2
Q.9.
What is the formula for calculating the perimeter of a rectangle?
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Perimeter = (2 × length) + (2 × width)
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Perimeter = length + width
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Perimeter = 4 × length
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Perimeter = length × width
Q.10.
A square has an area of 144 cm . What is the length of the square’s sides?
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12 cm
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14 cm
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24 cm
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28 cm
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