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 s
ides 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.
B. No, Danielle needs to remove 1 rectangle from the ramp and 1 rectangle from the block.
Step-by-step explanation:
It is true that the ramp has 2 triangular and 3 rectangular surfaces, and the block has 6 rectangular surfaces. However, Danielle doesn't want to paint the bottom rectangular surface of either the ramp or the block, so needs to remove one rectangle from each for her area computation.
Sam is using an industrial kitchen to make several batches of his famous chocolate chip granola bars. He needs to weight out 78 ounces of chocolate chips, plus or minus 2.5 ounces. The equation that can be used to find the minimum or maximum amount,c, of chocolate chips that he can weigh out is-
