Keliling dan Luas

Which of the following are examples of flat shapes discussed in mathematics?

• Square, rectangle, triangle

• Cube, cylinder, sphere

• Circle, oval, star

• Pyramid, cone, prism

A square-shaped object has a side length of 15 cm. What is its perimeter?

• 15 cm

• 30 cm

• 60 cm

• 225 cm

A rectangular table has a length of 100 cm and a width of 50 cm. What is the perimeter of the table?

• 150 cm

• 200 cm

• 300 cm

• 5000 cm

Apakah Anda menikmati pelajaran video tersebut?

• Ya

• Tidak

How is the perimeter of a triangle calculated?

• Multiply length by width.

• Add the lengths of all its sides.

• Multiply base by height and divide by two.

• Multiply side by side.

Tania's house roof is triangular with sides measuring 3 m, 3 m, and 2 m. What is the perimeter of Tania's roof?

• 6 m

• 7 m

• 8 m

• 9 m

Andi has a square photo frame with a side length of 40 cm. What is the area of Andi's photo frame?

• 80 cm²

• 160 cm²

• 1600 cm²

• 800 cm²

Lisa has a laptop with a length of 5 dm and a width of 3 dm. What is the area of Lisa's laptop?

• 8 dm²

• 15 dm²

• 10 dm²

• 25 dm²

A triangle has a base of 3 cm and a height of 4 cm. What is the area of the triangle?

• 6 cm²

• 7 cm²

• 12 cm²

• 24 cm²