I can find the surface area of a solid by using its net.Puedo hallar el área de superficie de un cuerpo geométrico usando su plantilla (desarrollo plano).
MissionMisión · Corner KitchenCocina de la esquina
Cook up the right answer.Cocina la respuesta correcta.
Corner Kitchen is packing cookies, pizzas and spice tins for the school fair. Every box starts as one flat net, so your job is to read each net and work out how much cardboard it needs.
La Cocina de la Esquina empaca galletas, pizzas y latas de especias para la feria escolar. Cada caja empieza como una plantilla plana, así que tu trabajo es leer cada plantilla y calcular cuánto cartón necesita.
Word bankBanco de palabras 5 words5 palabrasnet, face, surface area, …plantilla (desarrollo plano), cara, área de superficie, …
- netplantilla (desarrollo plano)
- A flat pattern that folds up into a solid. It shows every face once.Un patrón plano que se dobla para formar un sólido. Muestra cada cara una sola vez.
- facecara
- One flat side of a solid, such as the top of a box.Un lado plano de un sólido, como la parte de arriba de una caja.
- surface areaárea de superficie
- The total area of all the faces of a solid. It is measured in square units.El área total de todas las caras de un sólido. Se mide en unidades cuadradas.
- two-dimensionalbidimensional
- Flat, with length and width but no thickness.Plano, con largo y ancho pero sin grosor.
- edgearista
- A line where two faces of a solid meet.Una línea donde se unen dos caras de un sólido.
Stage 1 of 5Etapa 1 de 5
Get ReadyPrepárate
Wake up what you know, then explore today's model.
Activa lo que sabes y luego explora el modelo de hoy.
- A box is 6 long and 3 wide. Predict its surface area at height 3 by writing the area of each pair of faces. Then check in the model. Next, make the box 5 tall. Which pairs of faces changed, and which stayed the same?
- The lid of a cookie tin is a rectangle 12 cm long and 7 cm wide. What is the area of the lid?
- 84 cm²
- 19 cm²
- 38 cm²
- 84 cm³
- Each edge of a cube-shaped spice box is 5 cm long. What is the area of one square face?
- 10 cm²
- 20 cm²
- 125 cm²
- 25 cm²
- On a rectangular box, the top face is 30 cm². Which other face must be exactly the same size as the top?
- The front face
- The left side face
- The bottom face
- No other face is the same size
- 1 fresh problem with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Try ItInténtalo
Use the hints when you need them. Every wrong answer tells you why.
Usa las pistas cuando las necesites. Cada respuesta incorrecta te dice por qué.
- A time capsule box is a rectangular prism with l = 6 in, w = 4 in, h = 2 in. What is its surface area?
- 44 in²
- 48 in²
- 88 in²
- 88 in³
- How many faces does a rectangular prism have?
- 4
- 6
- 8
- 12
- Surface area is measured in which type of unit?
- Cubic units (in³, cm³, ft³)
- Square units (in², cm², ft²)
- Linear units (in, cm, ft)
- No units needed
Stage 3 of 5Etapa 3 de 5
On Your OwnPor tu cuenta
Tables, mistakes to find, and problems with a few steps.
Tablas, errores por encontrar y problemas de varios pasos.
- Fill in the table
- A time capsule box is a cube with edges of 5 cm. What is its surface area?
- 30 cm²
- 125 cm²
- 150 cm²
- 150 cm³
- Spot the Mistake — One Pair Was Not Doubled
- What is the best next move?
- Multiply all three edges: 6 × 4 × 3.
- Add the three edges: 6 + 4 + 3.
- Find the area of the 6 by 4 face and use it for all 6 faces.
- Find the area of one face from each pair.
Stage 4 of 5Etapa 4 de 5 · OptionalOpcional
Practice MorePractica más
Optional extra practice. Press New numbers for another problem on the same skill.
Práctica extra opcional. Toca Números nuevos para otro problema de la misma habilidad.
- 3 fresh problems with new numbers each time (interactive only).
Stage 5 of 5Etapa 5 de 5
Show What You KnowDemuestra lo que sabes
Show what you learned today. Take your time; you can try again.
Muestra lo que aprendiste hoy. Tómate tu tiempo; puedes intentarlo otra vez.
- What is the surface area of the box?
- 280 in²
- 284 in²
- 568 in²
- 840 in²
- Why is each face pair multiplied by 2?
- A rectangular box has two identical faces of each size
- Because you always double in geometry
- Because there are 2 sheets of paper
- To convert to square inches
- How many sheets of wrapping paper do you need?
- 1
- 2
- 3
- 568