Perimeter
Katana has two mirrors, one is an octagon and the other is a square. Each side is 5 cm long on both mirrors. Do the mirrors have the same perimeter?
No - the octagon has a perimeter 8 x 5 = 40cm and a square has a perimeter 4 x 5 = 20cm
A rectangular shape has the length of 3 units and the width of 4 units. What is the area of that shape?
3 x 4 = 12cm2
Bob wants to carpet the floor of his house. It is a rectangle and the sides are 4m and 3m. How much carpet is needed?
12 m2
A cube has a depth of 2cm, a length of 4cm, and a height of 3cm. Calculate the volume
2x4x3=24 cm3
The distance around a figure is called _______.
the perimeter
A rectangular book has a width of 3 cm and a length of 6 cm. What is the perimeter?
18cm
How do you calculate the area of a rectangle?
What is length X width?
Bob has to buy 12 square meters of carpet. Each square meter cost 5 dollars. He has 48 dollars. Does he have enough money to buy the carpet needed?
5 x 12 = 60 dollars. No he does not.
The number of cubic units that make up a solid figure is perimeter. True or False
No. It is volume.
The number of cubic units that make up a solid figure is called _______.
the volume
A square has sides that are each 7 m, what is the perimeter of the square?
7 x 4 = 28cm
A square room has a width of 10 m. How many square meters of flooring is needed for that room?
10 m2
Mr. Horst wants to put a fence around the playground. The sides are 100 m and 300 m and it is a rectangle. How many meters of fence will he need?
800m
Do two solid figures that have the same volume have to have the same shape?
No
The number of square units needed to cover a figure is called the _____.
Area
How long is each side of a triangle that has a perimeter of 27 cm?
27/3 = 9cm
How do you calculate area of a triangle?
What is base X height / 2 ?
The perimeter of an isosceles triangle is 50 cm. Two sides are 18 cm long. What is the length of the third side?
50-18-18=14 cm
A solid figure has the width of 4 cm, a length of 6 cm, and height of 2 cm. What is the volume of the solid figure?
4 x 6 x 2= 48 cm3
Can a cube have a volume of 9 cubic units?
No. Depth, length, and height all need to be the same number of cubes.
A parallelogram has a perimeter of 30km and a length of 10km. What is the width?
30-10-10=10 km
10/2=5km
A triangle has a height of 5 cm and a base of 4cm. What is the area?
Draw two different shapes that both have the perimeter of 16 cm.
4cm X 4cm square, or a 6 cm X 2 cm, or 5 cm X 3cm
Draw a shape that has a volume of 27 cm3.
3 x 3 x 3
A square has 9 cm sides. What is the area and perimeter of the square?
P = 9 + 9 + 9 + 9=36cm
A= 9 x 9 = 81cm2