The length of a rectangular park is 17m more than the breadth. If its perimeter is 178 m, then the length is (in mts)
A) 53
B) 36
C) 17
D) 49
let length of the rectangle be L and breadth be B so by the problem perimeter 2(IL+B)=34 => L+B =17 .......(1) => L2+B2+2LB=289 ..........(2) and the square of the diagonal = L2+B2=132 =169 .....(.3) By...
2 Answers 1 viewsCorrect option is (A) 8 + 5√2 Area of park \(=(3+\sqrt{2})(2+\sqrt{2})\) \(=6+3\sqrt{2}+2\sqrt{2}+2\) = \(8+5\sqrt{2}\)
2 Answers 1 viewsCorrect option is (C) 3 Area of rectangular sheet \(=(\sqrt{5}+\sqrt{2})(\sqrt{5}-\sqrt{2})\) \(=(\sqrt{5})^2-(\sqrt{2})^2\) = 5 - 2 = 3 square units
2 Answers 1 viewsCorrect option is A) 8 + 5√2
2 Answers 1 viewsCorrect option is (C) 48 cm2 \(\therefore\) Curved surface area of formed cylinder = Area of rectangular sheet = 12 \(\times\) 4 \(=48\,cm^2\)
2 Answers 1 viewsCorrect option is (C) 775 Area = \(41\frac{2}{3}\) \(\times\) \(18\frac{3}{5}\) \(=\frac{41\times3+2}3\times\frac{18\times5+3}5\) \(=\frac{123+2}3\times\frac{90+3}5\) \(=\frac{125}3\times\frac{93}5\) \(=25\times31\) \(=775\,m^2.\)
2 Answers 1 viewsCorrect option is A) 53
2 Answers 1 viewsCorrect option is D) 5
2 Answers 1 views