Kuis Kelas 6 - Matematika 1

Explanation
To solve this equation, we need to follow the order of operations, which states that we should perform multiplication before addition. Therefore, we first multiply 23 by 5, resulting in 115. Then, we add -12 to 115, giving us the final answer of 103.

Explanation
The correct answer is 37696 m2 dan 800 m. The area of a rectangle is calculated by multiplying its length and width, so the area of the given field is 152 m x 248 m = 37696 m2. The perimeter or circumference of a rectangle is calculated by adding the lengths of all its sides, so the perimeter of the given field is 2(152 m + 248 m) = 800 m.

Explanation
The distance between each pole is 10 meters, and the total length of the road is 330 meters. To find the number of poles needed, we divide the total length of the road by the distance between each pole: 330 / 10 = 33. However, since we need to include the first pole, the correct answer is 33 + 1 = 34.

Explanation
When multiplying three negative numbers, the result is always positive. In this case, -60, -44, and -34 are all negative numbers. Therefore, when we multiply them together, the result will be positive. The product of -60, -44, and -34 is 89760.

Explanation
The question states that there will be 3450 people attending the show, with 1/5 of them being children and 4/5 being adults. It also mentions that 1 seat for an adult can be used by 2 people, while 1 seat for a child can be used by 3 children. To find the total number of seats needed, we can calculate the number of seats needed for adults and children separately. For adults, we divide the total number of adults by 2 since each seat can be used by 2 adults. For children, we divide the total number of children by 3 since each seat can be used by 3 children. Adding the number of seats needed for adults and children gives us the total number of seats needed, which is 1610.

Explanation
The volume of a rectangular prism is calculated by multiplying the length, width, and height of the prism. In this case, the length (a) is 150 cm, the width (b) is 120 cm, and the height (c) is 100 cm. Therefore, the volume of the rectangular prism can be found by multiplying 150 cm, 120 cm, and 100 cm, which equals 1,800,000 cm³.

Explanation
The given information states that a rattan measuring 24 meters is used for making chairs, which is 2/4 or half of the rattan. Another 1/4 is used for making a hat. Therefore, the remaining rattan that is stored in the warehouse is equal to 1/4 of 24 meters, which is 6 meters. To convert this to millimeters, we multiply 6 meters by 1000 (since there are 1000 millimeters in a meter), resulting in 600 millimeters. Hence, the correct answer is 600 millimeters.

Explanation
The perimeter of a rectangle is calculated by adding the lengths of all four sides. Given that the perimeter of the rectangle is 500 cm and the length is 143 cm, we can find the width by subtracting the length from the perimeter and then dividing by 2. Therefore, the width is (500 - 143) / 2 = 107 cm.

Explanation
The formula for finding the perimeter of a trapezium is given as (a + b) x t / 2. This formula takes the sum of the lengths of the two parallel sides (a and b), multiplies it by the height (t), and then divides the result by 2. This is the correct formula for finding the perimeter of a trapezium, as it considers the lengths of both parallel sides and the height.

Explanation
The given question asks for the number of tiles needed to cover a room with dimensions 4 m x 5 m using tiles that are 20 cm x 20 cm. To find the number of tiles needed, we need to calculate the area of the room and divide it by the area of each tile. The area of the room is 4 m x 5 m = 20 square meters. The area of each tile is 0.2 m x 0.2 m = 0.04 square meters. Dividing the area of the room by the area of each tile, we get 20 square meters / 0.04 square meters = 500 tiles. Therefore, the correct answer is 500.