Mathematics

Araceli Burton

11 August, 00:59

Danielle built a ramp with a stopping block at the bottom for her scout troop's pinewood derby. She wants to paint the top and sides of the ramp. Danielle calculated the area by adding the areas of 2 triangular faces and 3 rectangular faces from the ramp and 6 rectangular faces from the block.

Did Danielle calculate the area correctly? If not, what was her mistake?

A. Yes, Danielle calculated the area correctly.

B. No, Danielle needs to remove 1 rectangle from the ramp and 1 rectangle from the block.

C. No, Danielle needs to add 1 triangle to the ramp and remove 1 rectangle from the block.

D. No, Danielle needs to remove 1 triangle from the ramp and add 1 rectangle to the block.