Ineed 1.trapezoid bear has a height of 8.5 centimeters and parallel bases that measure 6.5 centimeters and 11.5 centimeters. to the nearest square centimeter, find the area of the trapezoid. area of trapezoid bear = a0 square centimeters 2. regular pentagon penta has side lengths that are 9 meters long. to the nearest square meter, find the area of the pentagon. area of pentagon penta = a0 square meters

1) 76.5 cm²

               2) 35.07 m²

Step-by-step explanation:

1) The area of a trapezoid is A = (B + b)h/2

A = (11.5+6.5).8.5/2 = 18 . 8.5/2 = 153/2 = 76.5 cm²

2) For the pentagon, as it is a regular pentagon, we can divide it into 2 shapes. A equilateral triangle and a square.

Area of the square = l² = 9² = 81 m²

Area of a equilateral trinagle = l²√3/4 = 9²√3/4 = 81√3/42 = 81 . 1.73/2 = 140.3/4 = 35.07 m²

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

- (2, -7)

- lines r and s and lines t and u must be parallel