find the area of a square example 1 find the area of the square. solution use the formula for the...
DESCRIPTION
Find the Height of a Rectangle Example 3 Use the formula for the area of a rectangle and substitute 54 for A and 9 for b. SOLUTION A = bh Formula for the area of a rectangle 54 = 9h Substitute 54 for A and 9 for b. 6 = h Divide each side by 9. The height of the rectangle is 6 inches. ANSWER The rectangle has an area of 54 square inches. Find its height.TRANSCRIPT
Find the Area of a SquareExample 1
Find the area of the square.
SOLUTION
Use the formula for the area of a square and substitute 9 for s.
A = s2 Formula for the area of a square
= 92 Substitute 9 for s.
= 81 Simplify.
The area of the square is 81 square feet.ANSWER
Find the Area of a RectangleExample 2
Find the area of the rectangular pool.
Use the formula for the area of a rectangle. Substitute 24 for b and 16 for h.
SOLUTION
A = bh Formula for the area of a rectangle
= 24 · 16 Substitute 24 for b and 16 for h.
= 384 Multiply.
The area of the pool is 384 square feet.ANSWER
Find the Height of a RectangleExample 3
Use the formula for the area of a rectangle and substitute 54 for A and 9 for b.
SOLUTION
A = bh Formula for the area of a rectangle
54 = 9h Substitute 54 for A and 9 for b.
6 = h Divide each side by 9.
The height of the rectangle is 6 inches.ANSWER
The rectangle has an area of 54 square inches. Find its height.
Checkpoint Area of Squares and Rectangles
Find the area of the quadrilateral.
1.
2.
3.
A rectangle has an area of 52 square meters and a height of 4 meters. Find the length of its base.
4.
ANSWER 121 m2
ANSWER 12 ft2
ANSWER 26.55 yd2
ANSWER 13 m