Atrapezoid has bases of 15cm and 48cm. the area is 79.2cm^2. find the height

2.514285714

Step-by-step explanation:

formula for finding the area of a trapezoid is 1/2 (a+b) x h

a and b stand for the two bases

h stands for the height

79.2 cm = 1/2(48 + 15) x h(which is unknown)

79.2 cm² = 1/2(63) x h

79.2 cm² = 31.5(h)

you multiply both sides of the equal sign by 1/31.5

1/31.5 x 79.2cm² = 31.5(h) x 1/31.5

1/31.5 x 31.5 = 1 which is constant

1/31.5 x 79.2cm² = h

2.514285714 cm = h

the height of the trapezoid is 2.514285714cm

345

step-by-step explanation:

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.