Page 139 - TB_5B
P. 139
3 . Let a the base of the triangle below. Let b the height.
b cm
a cm
a. Write an expression that represents the area of the triangle.
b. Find the area of the triangle if a 4 and b 3.
4 . Let x the base 1 of the trapezoid below. Let y the base 2.
ym
10 m
xm
a. Write an expression that represents the area of the trapezoid.
b. Find the area of the trapezoid if x 10 and y 15.
128
b cm
a cm
a. Write an expression that represents the area of the triangle.
b. Find the area of the triangle if a 4 and b 3.
4 . Let x the base 1 of the trapezoid below. Let y the base 2.
ym
10 m
xm
a. Write an expression that represents the area of the trapezoid.
b. Find the area of the trapezoid if x 10 and y 15.
128
