MATH TASK : APPLYING CUBES AND CUBOID

Solve the following problems!

1. A classroom is 8 m long, 7 m wide, and 3 m high. If the ideal personal space for a single student is 6 m3, how many students should that room accommodate?

2. An amount of juice beverage is packed into a box of length 5.2 cm and width 3.7 cm. Find the heigth of the box if it is labeled "net 250 ml (cm3)!

3. A cuboid-shaped candle measures 3 cm x 3 cm x 8 cm. How long does it take until the candle compelety burns away if every cm3 of it burn away in 3 minutes?

4. Dani buys 10 beams of rafter each of which is 4 m long, 7 cm wide, and 5 cm high. How much must he pay if every 1 m3 of beam costs Rp. 1,200,000?

5. A swimming pool is 20 m long, 8 m wide and 2 m deep. The swimming pool is cleaned out and then filled up using water pump at rate of 50 liters/second. Find:
a. the volume of the swimming pool,
b. the time needed to fill it up!

TUGAS MATEMATIKA KLS VIII

MATERI DAN SOAL VOLUME KUBUS DAN BALOK

TUGAS MATEMATIKA

MATERI DAN SOAL LUAS KUBUS DAN BALOK

TUGAS MATEMATIKA

LUAS PERMUKAAN KUBUS DAN BALOK
Kerjakan soal-soal berikut di buku tugasmu.
1. Hitunglah luas permukaan kubus dengan panjang setiap rusuknya sebagai berikut.
a. 4 cm
b. 7 cm
C. 10 cm
d. 12 cm
2. Sebuah benda berbentuk kubus luas permukaannya 1.176 cm2. Berapa panjang rusuk kubus itu?
3. Dua buah kubus masing-masing panjang rusuknya 6 cm dan 10 cm. Hitunglah perbandingan luas permukaan dua kubus tersebut.
4. Hitunglah luas permukaan balok dengan ukuran sebagai berikut.
a. 8 cm x 4 cm x 2 cm
b. 8 cm x 3 cm x 4 cm
c. 9 cm x 9 cm x 6 cm
d. 9 cm x 8 cm x 4 cm
5. Suatu balok memiliki luas permukaan 198 cm2. Jika lebar dan tinggi balok masing-masing 6 cm dan 3 cm, tentukan panjang balok tersebut.
6. Hitunglah perbandingan luas permukaan dua buah balok yang berukuran (6 x 5 x 4) cm dan (8 x 7 x 4) cm.

MATH TASK FOR VIII GRADE

1.The circumference and are a circle witch the radius 12 cm is…
a. 452.16 cm and 75.36 cm² c. 75. 36 cm and 452. 16 cm2
b. 37. 68 cm and 113. 04 cm2 d. 113. 04 cm and 37. 68 cm2
2. The area of a circle is 1386 cm2, the radius its circle is ….. ( take phi =22/7 )
a. 5, 26 cm c. 21, 00 cm
b. 10, 50 cm d. 42, 00 cm
3. The circumference of a circle is 12, 56 cm,the area its circle is …(take phi=
3.14)
a. 12, 56 cm2 c. 50, 24 cm2
b. 25, 12 cm2 d. 75, 36 cm2
4. Run wheel has 500 times to a distance 660 m, then the radius of wheel is …
a. 14 cm c. 28 cm
b. 21 cm d. 35 cm
5. Two circles each of radius 17 cm and 25 cm, length of external common tangent
line is 15 cm. The distance between centers of two circles is …
a. 12 cm c. 23cm
b. 17 cm d. 35 cm
6. Given two circles of centers A and B, each of radius 34 c and 10 cm
respectively. The line CD is external common tangent line. If the line CD = 32cm,
the length of AB is …
a. 66 cm c. 42 cm
b. 44 cm d. 40 cm
7. The circles A and B each has radius of 5 cm and 3 cm. The distance between the
point A and the point B is 17 cm. The length of the internal common tangent line
is …
a. 15 cm c. 19 cm
b. 17 cm d. 20 cm
8. Given that radii of two circles are 14 cm and 10 cm. If distance between centers
of two circles is 26 cm, then the length of internal common tangent line of the
two circles is ..
a. 8 cm c. 12 cm
b. 10 cm d. 16 cm
9. Wheel’s diameter of a motorcycle is 56 cm. If the motorcycle travels the distance
of 8.8 km how many times does each wheel rotate?
a. 50 times c. 5500 times
b. 500 times d. 5000 times
10. From problem number 23, if each wheel rotates for 1500 times, what is the
distance traveled?
a. 25 km c. 27 km
b. 26,4 km d. 30 km

TUGAS MATEMATIKA, KELAS VIII E DAN VIII F SABTU 13 FEB 2010

DO THE FOLLOWING PROBLEMS IN DETAIL!
1. Find the circumference of a circle having radius 15 cm
2. A circle has an area which is numerically equal to its circumference. Find the radius of the circle!
3. A circle has a circumference of 62,8 cm. Taking phi= 3,14, the radius is....
4. A wheel rotating through 2,000 full turns travels a distance of 5,204 m. The area of each of the wheel's circular face is....
5. A wheel has a diameter of 56 cm. If the wheel rotates through 400 full turns, the distance it travel is...
6. A park is built in circular shape with a diameter of 42 m. on the park's perimeter, palm trees are planted and spaced 3 m apart. how many palm trees are planted?
7. A minute hand of a clock is 20 cm long. If the hand rotates for 25 minutes, then the distance the tip of the hand travels is...
8. In a circle O, The measurement of angle AOB is 72 degree and the radius is 21 cm. The area of sector OAB is....
9. A satellite is in an orbit 800 km above the Earth's surface. Knowing the length of the Earth radius as 6,400 km and assuming the satellite's orbit as circular, find:
a. the length of the orbital radius
b. the distance the satellite travels in one complete orbit
10. A sprinter is running on a circular track which is 396 m long. ind the radius of the track!

DAILY TEST

Subject : Mathematics

Class / Semester : VII / 2

Chapter : SET

Time : 60 minutes

A. Choose the correct answer of the following problems by crossing a, b, c, or d

1. Which of the following collection is a set?

a. Collection of naughty girls

b. Collection of SMP 1 Pbg students

c. Collection of diligent children

d. Collection of clever students

2. The following set which empty set is…

a. set of prime numbers between 7 and 13

b. set of natural numbers less than 1

c. set of prime number which can be divided by 2

d. the natural numbers less than 5

3. B is set of multiple numbers of 3 and 5 less than 20. The true statement is…