A rectangular lawn of dimensions 80 m $\times$ 60 m has two roads each 10 m wide running in the middle of the lawn, one parallel to the length and the other parallel to the breadth. What is the cost of traveling the two roads at Rs.3 per sq m?
Area = $\left(l + b - d\right)$ d
(80 + 60 - 10)10 => 1300 $m^2$
1300 $\times$ 3 = Rs.3900
|
The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area? |
Answer |
|
The side of a rhombus is 26 m and length of one of its diagonals is 20 m. The area of the rhombus is? |
Answer |
|
The diagonals of a rhombus are 15 cm and 20 cm. Find its area? |
Answer |
|
The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area? |
Answer |
|
The area of a parallelogram is 128sq m and its altitude is twice the corresponding base. Then the length of the base is? |
Answer |
|
The side of a square is increased by 25% then how much % does its area increases? |
Answer |
|
The cross-section of a cannel is a trapezium in shape. If the cannel is 10 m wide at the top and 6 m wide at the bottom and the area of cross-section is 640 sq m, the depth of cannel is? |
Answer |
|
The radius of a circle is increased by 1%. Find how much % does its area increases? |
Answer |
|
Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm? |
Answer |
|
Find the area of circle whose radius is 7m? |
Answer |