Area of a rectangle is equal to the total surface area of a hemisphere having volume 9826 cm³ . Find the perimeter of the rectangle if its length is 125% more than its breath. (Take π = 3)
Let, the radius of the hemisphere be ‘r’ cm. So according to question: 2/3 × 3 × r3 = 9826 r3 = 4913 r = 17 So, the total surface area of the hemisphere = 3 × π × 17² = 3 × 3 × 17² = 2601 cm² Let the breadth of the rectangle be ‘x’ cm So the length of the rectangle = 2.25x cm According to question: x × 2.25x = 2601 x² = 1156 x = 34 So the breadth of the rectangle = 34 cm Length of the rectangle = 34 × 2.25 = 76.5 cm So the perimeter of the rectangle = 2 × (76.5 + 34) = 221 cm
Five friends G, H, I, J and K are sitting in a straight line all facing in the north direction. G is sitting at one of the extreme ends. Three people ar...
Which of the following statement(s) is/are true?
Who among the following sits to the immediate left of O?
Who among the following person sits second to the right of J?
Which of the following statement are true?
I. H likes brown
II. A sits opposite to C
III. The one who likes Black sits immediate le...
Who sits opposite to the one who sits immediate left of K4?
Four of the following five are alike in a certain way and hence form a group. Who among the following person does not belong to that group?
Who among the following person faces E?
Eight persons N, O, P, Q, R, S, T and U sit in a row facing north direction. S sits second to the left of Q, who is not extreme right end. P is second p...
Who sits exactly between A and J?
