. A rectangle display board is measuring 8 m by 6 m. Robert wants to add a ribbon border around the display board. What is the length of ribbon that he will need? If the cost of the ribbon is $ 15 per meter then how much money does Robert needs to buy the ribbon?
A: $ 420
B: $210
C: $ 310
D: $ 240
Length of the display board = 8 m
Breadth of the display board = 6 m
Perimeter of the display board = 2(Length + Breadth)
= 2(8 + 6) m
= 2 × 14 m
= 28 m.
Cost of ribbon is $15 per metre.
Therefore, total cost for 28 m long ribbon = $15 × 28
= $420.
With a focus on mathematical calculations, Learnerscamp provides dynamic tutorials, real-world applications, and problem-solving scenarios that empower students to grasp mathematical concepts with ease. Our adaptive learning algorithms ensure personalized learning paths, allowing students to progress at their own pace while receiving instant feedback to reinforce their understanding.
Learnerscamp goes the extra mile by incorporating a robust assessment system that enables students to gauge their understanding through comprehensive tests. Our adaptive testing module dynamically tailors assessments to each student's proficiency level, providing a personalized evaluation of their mathematical knowledge.
sample Question screanshot
Upon completing a test, students receive a detailed and insightful report that not only highlights their overall performance but also breaks down their scores on a per-question basis. This granular analysis allows students to identify specific areas that may need improvement fostering a targeted and efficient approach to learning.
sample report screanshot