calculating area

The angle of a sector is 90 degrees and the radius of the circle is 3 cm. Calculate the area of the sector. => 3 π 2 square cm or 9 π 2 square cm or 9 π 4 square cm or 3 π 4 square cm..

Calculate the area of triangle ABC in the figure shown, if the area of the rectangle BCDE is 80 in. 2 . => 4 in. 2 or 82 in. 2 or 160 in. 2 or 40 in. 2..

The base and the height of a parallelogram are 18cm . and 23cm. If its base is decreased by 50%, calculate its new area. => 257 cm 2 or 184 cm 2 or 217 cm 2 or 207 cm 2..

The base and the height of a parallelogram are 12 cm and 14 cm. If the base of the parallelogram is decreased by 50%, calculate the area of the parallelogram. => 94 cm 2 or 134 cm 2 or 70 cm 2 or 84 cm 2..

What is the degree of the polynomial obtained by calculating the area of a square having a side (3 y + 3)? => 1 or 4 or 2 or 3..

The following graph shows the population of 3 of the fastest growing metropolitan areas in the U.S. as recorded in 1990. Calculate the total population of the three cities. => 285,338 or 425,000 or 250,000 or None of the above..

In quadrilateral ABCD, the diagonal BD measures 6 units. The lengths of the perpendiculars drawn to the diagonal BD are AY = 2 units and CX = 3 units. Calculate the area of the quadrilateral ABCD. => 15 square units or 16 square units or 14 square units or None of the above..

Which of the following can be calculated only for a cone but not for a cylinder? => volume or base area or curved surface area or slant height..

Katie calculates the area of an equilateral triangle using the formula A = ( 1 2 ) ap . Tim calculates the same area using the formula A = ( 1 4 ) s ² 3 . Do they both get the same answer?. => Yes or No..

The figure below gives the speed-time graph of a car moving with a uniform speed of 60 km/h for 5 hours. Speed-Time Graph of a Car Moving with Uniform Speed Distance travelled by the car (S) = v x t But 60 km/h = OC = breadth of the rectangle OABC 5h = OA = length of the rectangle OAB..