Concept explainers
To calculate: The volume of concrete needed to construct a staircase.
Answer to Problem 7RP
The volume of concrete needed is
Explanation of Solution
Given information:
A concreate staircase consists of each step of 15 cm high, 25 cm deep, and 1 cm wide. The top platform is square.
Formula used:
Volume of rectangle
l = length of rectangle, w = width of rectangle and h = height of rectangle
Calculation:
Use the divide and conquer method.
Volume of rectangle 1
Volume of rectangle 1
Volume of rectangle 1
Volume of rectangle 2
Volume of rectangle 2
Volume of rectangle 2
Volume of rectangle 2
Volume of rectangle 3
Volume of rectangle 3
Volume of rectangle 3
Volume of rectangle 3
Volume of concreate = Volume of rectangle 1 + Volume of rectangle 2 + Volume of rectangle 3
Volume of concreate
Volume of concreate
Chapter 12 Solutions
Geometry For Enjoyment And Challenge
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