Ashape is made of 12 right triangles of equal size. each right triangle has a base of 4 cm and a height of 5 cm. what is the total area, in square centimeters, of the shape?

The total area of the shape is

Step-by-step explanation:

step 1

Find the area of one right triangle

The area of a triangle is equal to

we have

substitute

step 2

To find the total area of the shape multiply the area of one triangle by 12

so

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

what does x eaqual

step-by-step explanation: