Answered

Westonci.ca offers quick and accurate answers to your questions. Join our community and get the insights you need today. Join our Q&A platform to connect with experts dedicated to providing precise answers to your questions in different areas. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

Julia made a model of a square pyramid. She used cardboard to construct the model with the dimensions shown. It has an open bottom.

A square pyramid has a square base with side lengths of 8 centimeters, and 4 triangular sides with a height of 5 centimeters.

What is the surface area of the model?
A. 80 cm2
B. 144 cm2
C. 224 cm2
D. 320 cm2

Sagot :

semsee45

Answer:

A.  80 cm²

Step-by-step explanation:

If a square pyramid has an open base, then the surface area is made up of the 4 congruent triangular sides only.

Area of a triangle = 1/2 × base × height

Given:

  • Base = 8 cm
  • Height = 5 cm

⇒ Area of one triangular face = 1/2 × 8 × 5

                                                 = 20 cm²

⇒ Total surface area = 4 triangular faces

                                   = 4 × 20

                                   = 80 cm²

Thank you for visiting our platform. We hope you found the answers you were looking for. Come back anytime you need more information. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.