Area of triangle is 120 cm2 and its base is 15 cm then its height is ………………. cm.
A) 16
B) 26
C) 36
D) 10
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The curved surface area of a right circular cone is 12320 cm^2. If the radius of its base is 56cm, then find its height.
CSA (cone) = πrl = 12320 \(\frac{22}{7}\) × 56 × l = 12320 l = 70 cm h = \(\sqrt{70^2-56^2}\) = 42 cm
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The area of triangle of base 8 cm is 20 sq.cm then, length of the altitude of the triangle is ………..
Correct option is B) 5 cm
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The radius of the base and height of a cone are 5 cm and 12 cm then its slant height
Correct option is (C) 13 cm Slant height of cone is \(l=\sqrt{r^2+h^2}\) \(=\sqrt{5^2+12^2}=\sqrt{25+144}\) \(=\sqrt{169}\) = 13 cm
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The radius of the base and height of a cone are 5 cm and 12 cm then its slant height
2 Answers
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Base of a coloured flag which is in the shape of triangle is 2 + √2 units and height is 2 – √2 units. Then the area of flag in square units.
Correct option is (C) 1 Area of flag \(=\frac12\times\) Base \(\times\) Height \(=\frac12\times(2+\sqrt2)\times(2-\sqrt2)\) \(=\frac{4-2}2\) = 1 square units
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If a triangle and a parallelogram are on the same base and between the same parallels then, area of the triangle is ……………. the area of parallelogram.
Correct option is C) half
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Area of a parallelogram is 64 cm^2 with base 16 cm. Then its height is
Correct option is B) 4 cm
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In a parallelogram the base is double the height and the area is 512 cm^2 then its base is …………………… cm
Correct option is D) 32
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The height of an equilateral triangle is √6 cm then its area is ……………….. cm^2 .
Correct option is A) 2√3
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Two sides of a triangle are given by `hati+hatj+hatk` and `-hati+2htj+3hatk`, then area of triangle is
Correct Answer - B Area of triangle `=(1)/(2)|vecAxxvecB|`
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