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Two circular football grounds of radius 42 m and 35 m are to be replaced with a bigger circular ground. What would be the radius of this new ground if the new ground has the same area as the sum of the two small grounds? |
$\sqrt{2979}$ m $\sqrt{2981}$ m $\sqrt{2999}$ m $\sqrt{2989}$ m |
$\sqrt{2989}$ m |
