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Start learning 50% faster. Sign in nowUsing the formula: R = (abc) / (4 × Area). Area using Heron’s formula: s = (13 + 14 + 15) / 2 = 21 cm, Area = √(21 × (21 - 13) × (21 - 14) × (21 - 15)) = √(21 × 8 × 7 × 6) = 84 cm². Thus, R = (13 × 14 × 15) / (4 × 84) = 8.125 cm.
If '+' means '–', '–' means '×', '÷' means '+' and '×' means '÷', then ' 30 – 12 + 20 × 10 ÷ 10 ' = (?)
...By interchanging which two signs the question will be correct?
15 + 5 ÷ 2 – 9 × 3 = 22
Select the correct combination of mathematical signs that can sequentially replace the “@” sign and balance the following equation.
14@6@8@3@...
If P denotes ‘multiplied by’, T denotes ‘subtracted from’, M denotes ‘added to’ and B denotes ‘divided by’, then 50 B 5 P 1...
If ‘@’ means ‘+’, ‘#’ means ‘-’, ‘$’ means ‘×’ and ‘%’ means ‘÷’, then what is the value of the following expression?<...
Which two signs should be interchanged to make the following equation correct?
9 × 10 ÷ 2 – 4 = 51 + 2
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
44 * 392 * 7 * 11 ...
If A denotes ‘+’, B denotes ‘×’, C denotes ‘−’, and D denotes ‘÷’, then what will come in place of ‘?’ in the following equation...
Select the number from among the given options that can replace the question mark (?) in the following series.
24, 35, 51, 73, 102, ?
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